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660:. The Florissant Formation itself is composed of alternating units of shale, mudstone, conglomerate, and volcanic deposits. There are six described units within the Florissant Formation. In order from bottom to top: the lower shale unit, lower mudstone unit, middle shale unit, caprock conglomerate unit, upper shale unit, and the upper pumice unit. Each of the shale units represents lacustrine environments, composed of very thin shales that are abundant in fossils, which alternate with tuffs from eruptions. The lower mudstone has been interpreted as a stream environment with the top of the unit being a
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of gross appearance based on climatic factors, the mean average temperature (or MAT) has been estimated to be around 13 °C, much warmer than the modern MAT at
Florissant of 4 °C. There have also been estimates that the MAT was between 16 and 18 °C, based on comparisons to the closest living relatives of the plants. There are also indications that the seasonal changes in the area were not as great as what is seen in modern times. Estimates of MAT, based on pollen, have put the temperature as high as 17.5 °C, but pollen is arguably less diagnostic than leaves. .
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676:, although the exact timing of the orogeny is debated In the late Eocene to the Early Oligocene, volcanic episodes began to occur to the southwest of the Florissant area. These episodes of eruption would deposit ash and other volcanic debris on the Florissant location, and the volcanic material would be one of the most important factors in the fossilization of the plants and animals that are so abundant in the formation. The fossil bearing paper shales are intercalated with larger deposits of volcanic material.
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249:
1058:, an elephant-sized animal with a pair of thick horns on the top of its head. All of this information is based on fragmented vertebrae and small pieces of tooth enamel. The oreodont, is an extinct family that resembles modern sheep and pigs. The only oreodont specimen is a jaw fragment. Other mammals have been described in the formation based on teeth specimens. In all, around a dozen mammalian taxa have been discovered and described in the Florissant.
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meters have been proposed. This would indicate that global climate change, rather than tectonic uplift, would be the main cause of changing environments in the area. The actual elevation of the
Florissant area during the Eocene is still being determined. While most of the analysis using paleoflora has the area at a higher elevation than modern times, there is evidence that the elevation was as low as the earlier estimates.
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904:, but no fully identified body fossils of them have been discovered yet. One unusual aspect of the spiders found in the formation is that they are not found with their legs curled in, but instead they are fully extended. This could indicate that they died in warmer temperature or acidic waters. The insects that are found in the ash-clay beds are diverse and numerous.
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988:, and other insects have all been found in the Florissant. Of these, the beetles are the most diverse and dominate in number of specimens found as fossils. About 38% of the specimens found in the fossil beds are varieties of beetle. These fossils are aquatic and terrestrial insects, giving insight into the ecology and biology of the area.
1021:. Most of these were bottom dwellers, except the perches, and many were tolerant of poor water conditions. Most of the fish have been found in the same shale layers versus other shale layers. This could indicate that there were more tolerable times for fish populations over the history of the lake than other times.
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Early estimates of the elevation of the
Florissant beds was determined to be between 300 and 900 meters, much lower than the modern elevation of 2,500-2,600 meters. However, more recent estimates that are based on paleoflora have put the elevation in the Eocene much higher. Ranges from 1,900 to 4,100
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Comparing fossil plants and leaves to modern analogs enables inferences about the climate to be made based on physiological and morphological similarities. One of the best ways to do this is by studying the characteristics of the leaves that have been found. By looking at the physiognomy, or analysis
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have been recorded from
Florissant, where they would have been expected. No explanation for the lack has been proposed, given the nearly 40,000 specimens from this location held by museums. The toxicity of the water due to volcanic activity could be to blame, but there are documented cases of aquatic
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There is a large diversity of plants in the beds of the
Florissant Formation, ranging from large redwoods to microscopic pollen. The petrified forest is one of the main tourist attractions at the monument with an estimated 30 preserved stumps. They are among the largest petrified stumps in the world.
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The
Florissant was deposited in a paleovalley after one of the lahars dammed it up. The resulting lake became as large as 36 km. There were two cycles of lake environments. The first one created the lower shale unit, while the second lake created the middle and upper shale units. Eventually, the
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The fossilized algae and aquatic angiosperms indicate that the lake was freshwater and shallow. Near the streams and shore, moisture was plentiful, allowing lush vegetation to grow. However, further up the hillsides was more dry-adapted vegetation. At the base of the valley, trees (such as sequoias)
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Tree-ring analysis indicates that the environment that the redwoods grew in during the time of sediment deposition would have been even more favorable than the current climate that the redwoods in
California grow in. The average ring width, one year of growth, is larger than the width of redwoods in
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Ostracods are believed to have fed on algae on the bottom of the lake. Most of the fossil examples of ostracod come from the preserved carapaces, or feeding appendages. Only one species of ostracods has been described so far. Several freshwater mollusks have been identified, including freshwater and
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Benthic diatoms are the dominant type of siliceous algae found in the beds. These are easy to fossilize due to their silica shells. During periods of volcanism, the influxes of silica from volcanic ash lead to blooms of algae, which lead to algal mats and the exceptional preservation of the fossils.
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to the lake. The lahars then covered the base of the redwoods that were living at the time, and the trunks of the trees became harder and fossilized. Through permineralization, the precipitates that were in the ground water flowed through the tree trunks, replacing the original matter with siliceous
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Based on the small size and the features of the teeth, the precipitation during the late Eocene to early
Oligocene has been estimated to be around 50-80 centimeters per year, with a distinct dry season. This is much wetter than the average 38 cm that falls in the area during modern times. Most
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Fossil plants, and in particular their leaves, have been the most useful sources of information of paleoclimate during the time of deposition of the
Florissant Formation. Plants have a smaller tolerance on average to climatic changes, whereas many animals can be mobile and respond to rapid seasonal
844:
have been found. With such a large number of species identified in this location, it becomes apparent that the environment was ideal for a large range of animals to survive in the area. The great preservation of these animals gives insight into the environment that they survived in, as well as some
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and die-offs. The diatom blooms and die-offs created layers of ash-clay deposits, called couplets, resulting in many thin layers. Each microlayer of ash and clay was compacted by overlaying sediments to create "paper shales" (usually between 0.1 and 1.0 mm thick). Within these paper shales the
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that went through the valley could have dammed up the valley, allowing for the creation of a lake. The middle and upper shale units were then deposited in this second generation of the lake. The caprock conglomerate was deposited as a large lahar went through the valley and accumulated down on the
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Most of the rocks that were deposited after the
Oligocene and before the Pleistocene have been eroded away. Most of the remaining units are composed of clasts of weathered Pikes Peak Granite, volcanics, and mud that were transported by streams that flowed through the area. Some mammoth bones have
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Insects from the area indicate different habitats as well. There are exclusively aquatic insects, such as dragonflies, that would have lived their entire lives on or near the lake. Meanwhile, the bees and butterflies would have preferred more open spaces in the surrounding hillsides and meadows.
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The Florissant Formation is also known for its fossilized leaves and the impressions they made. There are also specimens of fruits, seeds, cones, and flowers, which are all preserved in the paper shales of the formation. Most of the leaves come from trees and shrubs. Angiosperms are the dominant
710:, the volcano had eruptions that included domes, lava flows, and pyroclastic events. Ash from these events settled throughout the area and lahars flowed down the valleys. The ash that settled created the tuff, and the lahars formed the mudstones and the conglomerates of the Florissant formation.
630:
In 1969, the Florissant Fossil Bed National Monument was established after a long legal battle between local land owners and the federal government. Today, the park receives approximately 60,000 visitors a year, and is the site of ongoing paleontological investigations. The formation itself was
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comes from the French word for flowering. In the late 19th century tourist and excavators came to this location to observe the wildlife and collect samples for collections and study. The Petrified Forest, which is one of the main attractions at the monument today, lost much of its mass due to
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material to the modern redwoods of California. The foliage in the fossils is thinner and the female cones are smaller than the modern examples. There have been more than 130 species of pollen that have been identified in the shale beds at Florissant. These species represent samples from many
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753:. As the plants and animals died off, their leaves and bodies fell into the lake and eventually large amounts of organic matter accumulated at the bottom of the lake. This process was repeated often, possibly yearly, as the runoff from rain collected in the lake, causing cyclical
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dominated the landscape. The understory of this forest would have been composed of smaller trees and shrubs. There would have been a gradual transition between the different habitats from the base of the valley up the hillsides, with some overlap between the two.
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749:, whose shells were also composed of silica. The influx of more silica caused the diatoms to bloom in the lake. As the population of the diatoms massively increased, the stress from the volcanic episodes at the same time caused large die-offs of the local
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volcanoes became dormant and started to erode away. Over time, the volcanoes became so eroded that there are no more obvious signs of them on the surface. Instead, the Eocene erosional surface is the only remnant of the area's volcanoes.
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The volcanic material that caused so much destruction led to the preservation of the fossils within the Florissant Formation's shales and mudstones. As the ash was deposited on the landscape, it was carried by water through streams and
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The vertebrate fossils in the Florissant are predominantly small fragments of incomplete bones. There have been a few described species of vertebrates, mostly fish, but also birds and mammals. The fish discovered at the site include
651:
aged Pikes Peak Granite. There is an unconformity from the Pikes Peak Granite to the next unit, the Wall Mountain tuff. The massive unconformity is due to erosion that occurred during the uplift of the modern Rocky Mountains, the
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Within the lake itself, the volcanic deposits were periodically deposited into the lake either through direct deposition or though weathering. The volcanic material was rich in silica. Living in the lake at the time were
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1054:. The horse would have been small, about as large as a medium-sized dog, with three toes on each foot. All this information is based on a complete lower jaw. The largest mammal that has been discovered so far is a
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Worley-Georg, M., & Eberle, J. J. (2006). Additions to the chadronian mammalian fauna, florissant formation, florissant fossil beds national monument, colorado. Journal of Vertebrate Paleontology, 26(3),
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Steven, T. A. (1997). Middle and Late Cenozoic Tectonic and Geomorphic Development of the Front Range of Colorado. Rocky Mountain Association of Geologists, 1997, Colorado Front Range Guide Book, p. 115-125
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Harding, I. C., & Chant, L. S. (2000). Self-Sedimented Diatom Mats as Agents of Exceptional Fossil Preservation in the Oligocene Florissant Lake Beds, Colorado, United States. Geology (Boulder), 28(3),
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Dickinson, W. R. et al (1988). Paleogeographic and Paleotectonic Setting of the Laramide Sedimentary Basins in the Central Rocky Mountain Region, Geological Society of America Bulletin, v. 100, p. 1023-1039
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best preserved fossils can be found in the formation. Based on this information, it has been estimated that the lake could have lasted 2,500 to 5,000 years, if the diatom couplets represent annual cycles.
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McIntosh, W. C.; Geissman, J. W.; Chapin, C. E.; Kunk, M. J.; Henry, C. D. (1 May 1992). "Calibration of the latest Eocene-Oligocene geomagnetic polarity time scale using 40Ar/39Ar dated ignimbrites".
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Larsen, D. (2000) Upper Eocene and Oligocene Lacustrine Deposits of the Southwestern United States, with Emphasis on the Creede and Florissant Formations. AAPG Studies in Geology, v. 46, p. 425-438
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Thoene, J., Dena, M., Cesar, R., & Herbert, W. (2012). Depositional setting and fossil insect preservation; a study of the late eocene florissant formation, colorado. Palaios, 27(7), 481-488.
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Gregory, K. M., & Chase, C. G. (1992). Tectonic significance of paleobotanically estimated climate and altitude of the late eocene erosion surface, Colorado. Geology (Boulder), 20(7), 581-585
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Wobus, R. A. et al. (1990). Geochemistry of high-potassium rocks from the mid-Tertiary Guffey volcanic center, Thirtynine Mile volcanic field, central Colorado, Geology, V. 18, No 7, p. 642-445
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deposit. The mudstones were deposited on a valley floor, but not in a lake. The separation of the shale units by non-lake deposits could mean that there were two generations of lake deposits.
567:. The formation is noted for the abundant and exceptionally preserved insect and plant fossils that are found in the mudstones and shales. Based on argon radiometric dating, the formation is
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571:(approximately 34 million years old ) in age and has been interpreted as a lake environment. The fossils have been preserved because of the interaction of the volcanic ash from the nearby
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central California. Towards the end of the Eocene, the global temperature began to decrease. However, this episode of global cooling is not indicated in the fossil record at Florissant.
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Chapin, C. E., & Epis, R. C. (1964). Some Stratigraphic and Structural Features of the Thirtynine Mile Volcanic Field, Central Colorado. The Mountain Geologist, V. 1, p. 145-159
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Meyer, H. W. (2007). A Review of Paleotemperature-Lapse rate Methods for Estimating Paleoelevation from Fossil Floras. Reviews in Mineralogy and Geochemistry, v. 66, p. 155-177
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Around 25–30 kilometers to the southwest, a series of stratovolcanoes, similar to modern day volcanoes like Mt. St Helens, developed and erupted periodically. Called the
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with diatoms in the lake, causing a diatom bloom. As the diatoms fell to the bottom of the lake, any plants or animals that had recently died were preserved by the
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such as clams and snails. Of these, the most significant seem to be the spiders and insects, of which over 1,500 species have been identified in the fossil beds.
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1036:. Other birds were described in early literature from the 19th century, but the exact identification of these samples cannot be done due to lack of information.
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Meyer, H. W. & Weber, L. (1995). Florissant Fossil Beds National Monument: Preservation of an Ancient Ecosystem. Rocks and Minerals, v. 70, p. 232-239
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Chapin, C. E., & Cather, S. M. (1983). Eocene Tectonics and Sedimentation in the Colorado Plateau, Rocky mountain Association of Geologists, p. 33-54
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In the late Eocene to early Oligocene, approximately 34 million years ago, the area was a lake environment with redwood trees. The basement is the
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804:). These trees could have been as tall as 60 m (200 ft) until they were killed by lahars suffocating the oxygen supply to their roots.
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Evanoff, Emmett; McIntosh, W.C.; Murphey, P.C. (2001). "Stratigraphic summary and Ar/Ar geochronology of the Florissant Formation, Colorado".
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Some of the cones, foliage, and pollen have been identified as coming from the sequoias. There are distinct differences in the fossilized
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of the tree rings has resulted in estimated ages of 500–700 years old when the trees were killed and buried. Some of the stumps belong to
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renamed the Florissant Formation in 2001 to conform with the requirements of the North American Commission on Stratigraphic Nomenclature.
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minerals, replacing the organic matter with silica. This process of mineralization led to the preservation of the stumps of the trees.
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falls. Fine layers of clays and muds interspersed with layers of ash form "paper shales" holding beautifully-preserved fossils. The
1028:. Most of the skeleton was lost, but there were still enough diagnostic features to identify the bird. There are also examples of
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The Laramide Orogeny, which created the modern Rocky Mountains, had been uplifting the area to the west since the end of the
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are well represented in the Florissant, mostly a large variety of spiders. There have also been possible examples of
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Foos, A. & Hannibal, J. (1999). Geology of the Florissant Fossil Beds National Monument. Field Guide, 9 pages
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of the precipitation would have come in the late spring to early summer, with the rare snowfall in the winter.
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1573:"Sequoia affinis Reconconstruction - Florissant Fossil Beds National Monument (U.S. National Park Service)"
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2353:
2278:
2158:
2153:
1774:
1764:
1404:
1128:
624:
537:
155:
1193:
1046:
being discovered so far. In the lower mudstone units, there are samples of broken bones of a horse, a
4935:
5710:
4925:
4004:
3989:
3939:
3859:
3849:
3844:
3765:
3430:
3315:
3149:
2426:
2348:
2308:
2288:
2263:
2238:
2063:
2048:
2038:
2023:
1975:
1960:
1930:
1794:
797:
727:
560:
459:
269:
134:
1625:
as indicators of paleoclimate. Palaeogeography, Palaeoclimatology, Palaeoecology, 221(3-4), 203-214.
4528:
4019:
3760:
3687:
3592:
3577:
3435:
2253:
2248:
2243:
2223:
2128:
2123:
1950:
1789:
1744:
1726:
1409:"Pikes Peak folio, Colorado, with a description of Cripple Creek special map by R.A.F. Penrose, Jr"
1131:, a similarly fossiliferous, but older freshwater Eocene formation in the Colorado Rocky Mountains.
620:
607:
During the 1860s and 1870s the area was mapped by geologists for the first time. Geologists of the
145:
828:
Florissant is significant in that it is one of the earliest known examples of freshwater diatoms.
5727:
3979:
3954:
3934:
3720:
3385:
2804:
2338:
2333:
2328:
2318:
2283:
2268:
2258:
2228:
2218:
2203:
2173:
2163:
2143:
2033:
1985:
824:
different habitats that were located near and around the lake, as well as farther up the valley.
159:
3652:
5447:
3969:
3959:
3949:
2739:
2208:
2193:
2118:
2028:
2003:
1935:
1679:
1590:
1377:
1339:
722:
5813:
4797:
4621:
3785:
3622:
3390:
3360:
3078:
2744:
2724:
2343:
2313:
2298:
2183:
2168:
2103:
2088:
2018:
2008:
1572:
1271:
1252:
805:
703:
653:
4965:
4807:
4049:
3944:
3790:
2823:
2784:
2303:
2293:
2233:
2133:
2108:
2093:
2043:
2013:
1804:
872:
792:
764:
750:
694:
5097:
4915:
4118:
3745:
3697:
3662:
3093:
2729:
2373:
2368:
1209:
612:
611:
visited the area in the early 1870s, and fossil plants from the beds were described by
601:
1571:
Florissant, Mailing Address: P. O. Box 185; Us, CO 80816 Phone: 719 748-3253 Contact.
656:. The Wall Mountain Tuff was deposited as a result of a large eruption from a distant
17:
6321:
5595:
5387:
5347:
4930:
4458:
3775:
608:
254:
80:
38:
128:
6277:
University and college buildings listed on the National Register of Historic Places
5202:
5187:
5142:
4583:
3730:
3682:
3627:
2759:
1408:
1018:
837:
992:
terrestrial. The most abundant mollusk that has been identified at Florissant is
5192:
4453:
1055:
1047:
969:
949:
941:
917:
913:
909:
809:
757:
648:
55:
42:
4762:
3750:
3657:
3647:
2833:
1702:
1222:
1134:
1033:
1029:
893:
841:
680:
been found within these units and have been dated to around 50,000 years old.
673:
100:
65:
486:
473:
216:
203:
5480:
2936:
1066:
993:
929:
901:
897:
858:
854:
105:
49:
3822:
1980:
1955:
1945:
1940:
1706:
1051:
1042:
are almost non-existent in the shales, with only one specimen of a small
965:
953:
921:
905:
889:
862:
448:
236:
95:
90:
75:
70:
60:
623:. The formation was first formally named as the Florissant Lake Beds by
1622:
1062:
1043:
1014:
961:
933:
925:
866:
769:
657:
587:
established to preserve and study the geology and history of the area.
110:
85:
1540:
Florissant Fossil Beds. 2012. National Park Service. 5 November 2012.
688:
379:
The Pioneer House, showing how the original pioneers of the west lived
6272:
List of jails and prisons on the National Register of Historic Places
5561:
Baaj Nwaavjo I'tah Kukveni – Ancestral Footprints of the Grand Canyon
5461:
Baaj Nwaavjo I'tah Kukveni – Ancestral Footprints of the Grand Canyon
2471:
2113:
1716:
1039:
1025:
1006:
957:
945:
937:
754:
746:
576:
568:
1671:
1665:
1541:
547:
4740:
871:
780:
763:
737:
721:
687:
665:
661:
638:
182:
1366:"History of Paleontology at the Florissant Fossil Beds, Colorado"
1024:
Three examples of birds have been found in the beds, including a
790:
The majority of the stumps have been identified as belonging to
1413:
U.S. Geological Survey Geologic Atlas of the United States Folio
977:
973:
882:
5817:
4969:
2837:
1675:
985:
981:
885:, forms the logo for Florissant Fossil Beds National Monument
1621:
Moe, A. P., & Smith, D. M. (2005). Using pre-Quaternary
1257:
10.1130/0091-7613(1992)020<0459:COTLEO>2.3.CO;2
836:
The majority of the animal fossils found at Florissant are
3809:
National Register of Historic Places listings in Colorado
559:
is a sedimentary geologic formation outcropping around
6378:
Paleontological protected areas in the United States
6333:
National Park Service National Monuments in Colorado
1272:"Florissant Fossil Beds National Monument, Colorado"
6252:
6231:
6205:
6164:
5897:
5874:
History of the National Register of Historic Places
5851:
5704:
5539:
5446:
5003:
4901:
4748:
4739:
4592:
4099:
4081:
4063:
3830:
3821:
3799:
3706:
3553:
3525:
3472:
3444:
3211:
3188:
3120:
3102:
3069:
3051:
3023:
2995:
2913:
2880:
2871:
2715:
2382:
1994:
1923:
1725:
543:
533:
525:
510:
502:
465:
455:
440:
357:
283:
275:
265:
260:
242:
232:
193:
188:
178:
173:
165:
151:
141:
133:Florissant Formation at the Clare fossil quarry in
32:
1125:, a largely untouched petrified forest in Colorado
5905:List of U.S. National Historic Landmarks by state
5782:President Lincoln's Cottage at the Soldiers' Home
816:paleoflora, but there are also conifers present.
1524:
1522:
1520:
1518:
6297:National Register of Historic Places portal
4579:Yanks Gulch/Upper Greasewood Creek Natural Area
1608:
1606:
1498:
1496:
1494:
1475:
1473:
1448:Denver Museum of Nature and Science Proceedings
1199:. Land Resource Division, National Park Service
1140:List of national monuments of the United States
853:The invertebrate fossils of the Florissant are
5829:
4981:
2849:
1687:
1463:
1461:
1359:
1357:
1355:
8:
423:
398:
333:
305:
3693:United States Air Force Academy, Cadet Area
3598:Durango and Silverton Narrow Gauge Railroad
1595:: CS1 maint: numeric names: authors list (
1370:Geological Society of America Special Paper
698:at Florissant Fossil Beds National Monument
6343:Protected areas of Teller County, Colorado
5836:
5822:
5814:
4988:
4974:
4966:
4745:
4319:Indian Springs Trace Fossil
3827:
2877:
2856:
2842:
2834:
1694:
1680:
1672:
1536:
1534:
1159:"Florissant Fossil Beds National Monument"
354:
127:
29:
5845:U.S. National Register of Historic Places
3608:Georgetown–Silver Plume Historic District
3573:Central City/Black Hawk Historic District
4954:Colorado Department of Natural Resources
3736:Indian Springs Trace Fossil Natural Area
1666:Florissant Fossil Beds National Monument
1194:"Listing of acreage – December 31, 2011"
1173:United States Department of the Interior
785:Fossilised leaf preserved in fine detail
581:Florissant Fossil Beds National Monument
548:Florissant Fossil Beds National Monument
358:Florissant Fossil Beds National Monument
313:Florissant Formation (the United States)
4997:National monuments of the United States
4339:Kremmling Cretaceous Ammonite
1338:. Washington, D.C.: Smithsonian Books.
1329:
1327:
1325:
1323:
1321:
1319:
1317:
1315:
1313:
1311:
1309:
1150:
1588:
1307:
1305:
1303:
1301:
1299:
1297:
1295:
1293:
1291:
1289:
27:National monument in the United States
4274:Geneva Basin Iron Fens
4091:List of Colorado state wildlife areas
1223:"NPS Annual Recreation Visits Report"
1210:National Park Service Acreage Reports
600:collectors removing large amounts of
7:
5681:Santa Rosa and San Jacinto Mountains
5531:Santa Rosa and San Jacinto Mountains
4389:Mount Emmons Iron Bog
4384:Mount Callahan & Logan Wash Mine
4174:Colorado Tallgrass Prairie
3801:National Register of Historic Places
439:
6363:Protected areas established in 1969
6358:Natural history museums in Colorado
5752:Harriet Tubman Underground Railroad
4134:Blue Mountain-Little Thompson Fault
1164:Geographic Names Information System
706:volcanic center, within the larger
6353:Museums in Teller County, Colorado
6260:National Historic Preservation Act
3638:Mesa Verde Administrative District
3588:Cumbres and Toltec Scenic Railroad
25:
6368:Fossil parks in the United States
5168:Emmett Till and Mamie Till-Mobley
2795:South Central Colorado Urban Area
2775:North Central Colorado Urban Area
1542:http://www.nps.gov/flfo/index.htm
1364:Veach, S.W.; Meyer, H.W. (2008).
900:. There may be some evidence for
796:, a close relative of the modern
6302:
6301:
6290:
4921:Great Divide Mountain Bike Route
4519:South Cathedral Bluffs
4354:Lower Greasewood Creek
2817:
422:
415:
397:
390:
373:
367:V (protected landscape/seascape)
332:
325:
304:
297:
247:
6383:1969 establishments in Colorado
5767:Northeast Canyons and Seamounts
4544:Trinidad K-T Boundary
4194:Cross Mountain Canyon
4144:Boulder Mountain Park
3583:Cripple Creek Historic District
1169:United States Geological Survey
1123:Cherokee Ranch petrified forest
806:Dendrochronological examination
509:
454:
341:Florissant Formation (Colorado)
6213:Federated States of Micronesia
5859:Architectural style categories
5481:Camp Hale – Continental Divide
5118:Charles Young Buffalo Soldiers
4717:Trail Ridge Road/Beaver Meadow
4184:Copeland Willow Carr
3920:James M. Robb - Colorado River
3555:28 National Historic Landmarks
3535:Cache la Poudre River Corridor
1270:Erwin, Diane M.; Looy, Cindy.
708:Thirtynine Mile volcanic field
684:Thirtynine Mile Volcanic Field
573:Thirtynine Mile volcanic field
1:
5772:Pacific Remote Islands Marine
5737:Aleutian Islands World War II
5043:Belmont-Paul Women's Equality
4750:28 National Recreation Trails
4594:26 Scenic and Historic Byways
4514:South Boulder Creek
4409:North Park Phacelia
4299:High Mesa Grassland
3708:16 National Natural Landmarks
3613:Granada War Relocation Center
3563:Beaver Meadows Visitor Center
3446:3 National Conservation Areas
772:stump with visible tree rings
431:Show map of the United States
316:Show map of the United States
5651:Organ Mountains–Desert Peaks
5293:Medgar and Myrlie Evers Home
5223:George Washington Birthplace
4509:South Beaver Creek
4434:Park Creek Hogback
4264:Garden Park Fossil
4169:Coal Creek Tallgrass Prairie
3746:Morrison-Golden Fossil Areas
3396:Rocky Mountain National Park
3221:Black Canyon of the Gunnison
2937:Camp Hale-Continental Divide
2890:Black Canyon of the Gunnison
619:, and vertebrate fossils by
6338:Natural history of Colorado
5691:Upper Missouri River Breaks
4539:Treasurevault Mountain
4259:Fruita Paleontological
3678:Telluride Historic District
3673:Silverton Historic District
3618:Leadville Historic District
3474:8 National Wildlife Refuges
3025:2 National Recreation Areas
2865:Protected areas of Colorado
845:aspects of their behavior.
692:A large petrified stump of
506:5,998 acres (24.27 km)
6409:
6265:Historic Preservation Fund
6244:American Legation, Morocco
5762:Military Working Dog Teams
5516:Saint Francis Dam Disaster
5373:Springfield 1908 Race Riot
5288:Little Bighorn Battlefield
4607:Cache la Poudre-North Park
4494:Shell Duck Creek
4484:San Miguel River
3071:4 National Historic Trails
2765:Front Range Urban Corridor
1334:Meyer, Herbert W. (2003).
6285:
6206:Lists by associated state
5800:
5626:Grand Staircase–Escalante
5418:Virgin Islands Coral Reef
5278:Katahdin Woods and Waters
4948:
4617:Colorado River Headwaters
4234:East Sand Dunes
4149:Brush Creek Fen
3527:3 National Heritage Areas
2997:3 National Historic Sites
2813:
1713:
1336:The fossils of Florissant
529:71,763 (in 2017)
514:August 20, 1969
384:
372:
362:
291:
126:
37:
6373:Paleontology in Colorado
6187:Northern Mariana Islands
5777:Papahānaumokuākea Marine
5408:Tule Springs Fossil Beds
5298:Mill Springs Battlefield
5228:George Washington Carver
4911:American Discovery Trail
4697:South Platte River Trail
4374:Miramonte Reservoir
4294:High Creek Fen
4229:East Lost Park
4083:307 State Wildlife Areas
3213:44 National Wildernesses
3112:Continental Divide Trail
2800:Southern Rocky Mountains
2755:Denver Metropolitan Area
878:Palaeovespa florissantia
840:, but many specimens of
5641:Kasha-Katuwe Tent Rocks
5591:Canyons of the Ancients
5576:Berryessa Snow Mountain
5471:Berryessa Snow Mountain
5363:Salinas Pueblo Missions
5048:Birmingham Civil Rights
5023:Alibates Flint Quarries
4179:Comanche Grassland
3781:Sulphur Cave and Spring
3726:Garden Park Fossil Area
3633:Ludlow Tent Colony Site
3603:Elitch Gardens Carousel
3104:1 National Scenic Trail
3053:1 Wild and Scenic River
2947:Canyons of the Ancients
1668:(National Park Service)
1225:. National Park Service
565:Teller County, Colorado
169:74 m (243 ft)
6182:Minor Outlying Islands
6165:Lists by insular areas
5879:Keeper of the Register
5757:Marianas Trench Marine
5621:Grand Canyon–Parashant
5243:Grand Canyon–Parashant
5173:Florissant Fossil Beds
5093:Castillo de San Marcos
4853:Rocky Mountain Arsenal
4524:Specimen Mountain
4159:Castlewood Canyon
4114:Antero-Salt Creek
4101:96 State Natural Areas
3741:Lost Creek Scenic Area
3512:Rocky Mountain Arsenal
2977:Florissant Fossil Beds
2790:South-Central Colorado
2750:Colorado Western Slope
886:
786:
773:
732:
699:
644:
617:Samuel Hubbard Scudder
487:38.91374°N 105.28627°W
18:Florissant Fossil Beds
5884:National Park Service
5864:Contributing property
5661:Prehistoric Trackways
5521:San Gabriel Mountains
5388:Sunset Crater Volcano
5013:African Burial Ground
5005:National Park Service
4883:West Lost Trail Creek
4843:Platte River Greenway
4712:Trail of the Ancients
4707:Tracks Across Borders
4672:Pawnee Pioneer Trails
4569:Wheeler Geologic
4504:Slumgullion Earthflow
4349:Lookout Mountain
4309:Hurricane Canyon
4284:Gunnison Gravels
4269:Gateway Palisade
4244:Escalante Canyon
3925:John Martin Reservoir
3771:Slumgullion Earthflow
3668:Shenandoah-Dives Mill
3331:Maroon Bells-Snowmass
3190:2 National Grasslands
3061:Cache la Poudre River
2780:Northwestern Colorado
2735:Colorado Mineral Belt
1129:Green River Formation
1070:animals in the lake.
875:
784:
767:
725:
691:
642:
625:Charles Whitman Cross
538:National Park Service
6393:Florissant Formation
6388:1969 in paleontology
6239:District of Columbia
5666:Río Grande del Norte
5496:Gila Cliff Dwellings
5273:John Day Fossil Beds
5253:Hagerman Fossil Beds
5233:Gila Cliff Dwellings
5053:Booker T. Washington
4662:Los Caminos Antiguos
4479:Saddle Mountain
4449:Rajadero Canyon
4344:Limestone Ridge
4334:Ken-Caryl Ranch
4154:California Park
3643:Minnequa Steel Works
2915:9 National Monuments
2074:Cherry Hills Village
728:Florissantia speirii
615:, fossil insects by
557:Florissant Formation
492:38.91374; -105.28627
460:Florissant, Colorado
406:Show map of Colorado
344:Show map of Colorado
270:Florissant, Colorado
135:Florissant, Colorado
33:Florissant Formation
5606:Craters of the Moon
5133:Craters of the Moon
4534:Tamarack Ranch
4254:Fourmile Creek
4239:Elephant Rocks
3840:Arkansas Headwaters
3688:Trujillo Homesteads
3593:Denver Civic Center
3578:Colorado Chautauqua
3454:Dominguez–Escalante
3226:Black Ridge Canyons
3122:11 National Forests
3015:Sand Creek Massacre
2824:Colorado portal
2760:Four Corners Region
1895:Tourist attractions
1800:Indian reservations
857:, such as spiders,
621:Edward Drinker Cope
534:Governing body
483: /
213: /
39:Stratigraphic range
6348:Paleogene Colorado
5804:Full Detailed List
5586:California Coastal
4722:Unaweep Tabeguache
4702:Top of the Rockies
4652:Highway of Legends
4444:Rabbit Valley
4429:Paradise Park
4394:Mount Goliath
4304:Hoosier Ridge
4289:Haviland Lake
4224:Dudley Bluffs
4139:Bonny Prairie
3900:Golden Gate Canyon
3721:Garden of the Gods
3281:Greenhorn Mountain
3145:Medicine Bow–Routt
3089:Pony Express Trail
2805:Southwest Colorado
1079:or daily changes.
887:
787:
774:
733:
700:
645:
217:38.914°N 105.287°W
160:Pikes Peak Granite
156:Wall Mountain Tuff
6315:
6314:
5869:Historic district
5811:
5810:
5787:Rose Atoll Marine
5448:US Forest Service
5378:Statue of Liberty
5328:Organ Pipe Cactus
5088:Casa Grande Ruins
5018:Agate Fossil Beds
4963:
4962:
4944:
4943:
4926:Kokopelli's Trail
4903:6 Regional Trails
4893:White House Ranch
4803:Greyrock Mountain
4735:
4734:
4632:Frontier Pathways
4559:Wacker Ranch
4554:Unaweep Seep
4464:Rough Canyon
4439:Pyramid Rock
4379:Mishak Lakes
4324:Irish Canyon
4214:Droney Gulch
4164:Chalk Bluffs
4129:Blacks Gulch
4109:Aiken Canyon
3870:Cheyenne Mountain
3855:Castlewood Canyon
3817:
3816:
3084:Old Spanish Trail
2831:
2830:
2740:Colorado Piedmont
2324:Steamboat Springs
2199:Greenwood Village
1880:Statistical areas
1850:Prehistoric sites
1061:Surprisingly, no
643:2013 aerial photo
585:national monument
553:
552:
456:Nearest city
353:
352:
16:(Redirected from
6400:
6305:
6304:
6295:
6294:
6293:
6218:Marshall Islands
5838:
5831:
5824:
5815:
5696:Vermilion Cliffs
5671:San Juan Islands
5601:Cascade–Siskiyou
5506:Mount St. Helens
5456:Admiralty Island
5303:Montezuma Castle
5238:Governors Island
5103:Castle Mountains
5078:Cape Krusenstern
5073:Canyon de Chelly
5058:Buck Island Reef
4990:
4983:
4976:
4967:
4936:Tabeguache Trail
4888:Wheeler Ten Mile
4838:Petroglyph Point
4793:Fish Creek Falls
4746:
4622:Dinosaur Diamond
4612:Collegiate Peaks
4574:White Rocks
4424:Pagosa Skyrocket
4414:Orient Mine
4404:Needle Rock
4364:Mexican Cut
4329:Jimmy Creek
4124:Badger Wash
4000:Spinney Mountain
3828:
3716:Big Spring Creek
3623:Lindenmeier site
3540:Sangre de Cristo
3401:Sangre de Cristo
3301:Hunter–Fryingpan
3276:Great Sand Dunes
3256:Dominguez Canyon
3246:Collegiate Peaks
3079:California Trail
2895:Great Sand Dunes
2882:4 National Parks
2878:
2858:
2851:
2844:
2835:
2822:
2821:
2820:
2745:Colorado Plateau
2725:Central Colorado
2179:Glenwood Springs
2079:Colorado Springs
1835:National Forests
1696:
1689:
1682:
1673:
1654:
1651:
1645:
1642:
1636:
1632:
1626:
1619:
1613:
1610:
1601:
1600:
1594:
1586:
1584:
1583:
1568:
1562:
1559:
1553:
1550:
1544:
1538:
1529:
1526:
1513:
1510:
1504:
1500:
1489:
1486:
1480:
1477:
1468:
1465:
1456:
1455:
1443:
1437:
1434:
1428:
1427:
1425:
1423:
1401:
1395:
1394:
1392:
1390:
1361:
1350:
1349:
1331:
1284:
1283:
1281:
1279:
1267:
1261:
1260:
1240:
1234:
1233:
1231:
1230:
1219:
1213:
1207:
1205:
1204:
1198:
1190:
1184:
1183:
1181:
1179:
1155:
654:Laramide Orogeny
521:
519:
498:
497:
495:
494:
493:
488:
484:
481:
480:
479:
476:
432:
426:
425:
419:
407:
401:
400:
394:
377:
355:
345:
336:
335:
329:
317:
308:
307:
301:
253:
251:
250:
228:
227:
225:
224:
223:
222:38.914; -105.287
218:
214:
211:
210:
209:
206:
131:
122:
52:
30:
21:
6408:
6407:
6403:
6402:
6401:
6399:
6398:
6397:
6328:IUCN Category V
6318:
6317:
6316:
6311:
6291:
6289:
6281:
6248:
6227:
6201:
6160:
5893:
5847:
5842:
5812:
5807:
5796:
5714:
5700:
5631:Ironwood Forest
5566:Basin and Range
5543:Land Management
5542:
5535:
5442:
5393:Timpanogos Cave
5313:Natural Bridges
5138:Devils Postpile
5113:César E. Chávez
5083:Capulin Volcano
4999:
4994:
4964:
4959:
4940:
4897:
4808:High Line Canal
4731:
4682:San Juan Skyway
4627:Flat Tops Trail
4588:
4564:West Creek
4549:Two Buttes
4499:Shell Rock
4489:Sand Creek
4474:Ryan Gulch
4419:Owl Canyon
4219:Duck Creek
4204:Deer Gulch
4095:
4077:
4059:
4030:Sweetwater Lake
3880:Eldorado Canyon
3813:
3795:
3791:West Bijou Site
3702:
3653:Pike's Stockade
3568:Bent's Old Fort
3549:
3521:
3468:
3464:McInnis Canyons
3440:
3241:Cache La Poudre
3207:
3184:
3116:
3098:
3065:
3047:
3019:
3010:Bent's Old Fort
2991:
2909:
2867:
2862:
2832:
2827:
2818:
2816:
2809:
2785:San Luis Valley
2711:
2378:
2274:Manitou Springs
2139:Federal Heights
1990:
1919:
1860:Protected areas
1785:Historic places
1721:
1709:
1700:
1662:
1657:
1652:
1648:
1643:
1639:
1633:
1629:
1620:
1616:
1611:
1604:
1587:
1581:
1579:
1570:
1569:
1565:
1560:
1556:
1551:
1547:
1539:
1532:
1527:
1516:
1511:
1507:
1501:
1492:
1487:
1483:
1478:
1471:
1466:
1459:
1445:
1444:
1440:
1435:
1431:
1421:
1419:
1403:
1402:
1398:
1388:
1386:
1384:
1363:
1362:
1353:
1346:
1333:
1332:
1287:
1277:
1275:
1274:. UCMP Berkeley
1269:
1268:
1264:
1242:
1241:
1237:
1228:
1226:
1221:
1220:
1216:
1202:
1200:
1196:
1192:
1191:
1187:
1177:
1175:
1157:
1156:
1152:
1148:
1119:
1110:
1097:
1076:
1002:
898:daddy long-legs
861:, insects, and
851:
834:
821:Sequoia affinis
802:S. sempervirens
793:Sequoia affinis
779:
720:
695:Sequoia affinis
686:
637:
604:from the site.
593:
517:
515:
491:
489:
485:
482:
477:
474:
472:
470:
469:
451:, United States
436:
435:
434:
433:
430:
429:
428:
427:
410:
409:
408:
405:
404:
403:
402:
380:
368:
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320:
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248:
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83:
78:
73:
68:
63:
58:
48:37.2–33.9
47:
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28:
23:
22:
15:
12:
11:
5:
6406:
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6396:
6395:
6390:
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6229:
6228:
6226:
6225:
6220:
6215:
6209:
6207:
6203:
6202:
6200:
6199:
6197:Virgin Islands
6194:
6189:
6184:
6179:
6174:
6172:American Samoa
6168:
6166:
6162:
6161:
6159:
6158:
6153:
6148:
6143:
6138:
6133:
6128:
6123:
6118:
6113:
6108:
6106:South Carolina
6103:
6098:
6093:
6088:
6083:
6078:
6073:
6071:North Carolina
6068:
6063:
6058:
6053:
6048:
6043:
6038:
6033:
6028:
6023:
6018:
6013:
6008:
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5988:
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5953:
5948:
5943:
5938:
5933:
5928:
5923:
5918:
5913:
5908:
5901:
5899:
5898:Lists by state
5895:
5894:
5892:
5891:
5889:Property types
5886:
5881:
5876:
5871:
5866:
5861:
5855:
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5843:
5841:
5840:
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5801:
5798:
5797:
5795:
5794:
5789:
5784:
5779:
5774:
5769:
5764:
5759:
5754:
5749:
5744:
5739:
5733:
5731:
5702:
5701:
5699:
5698:
5693:
5688:
5686:Sonoran Desert
5683:
5678:
5673:
5668:
5663:
5658:
5656:Pompeys Pillar
5653:
5648:
5643:
5638:
5633:
5628:
5623:
5618:
5613:
5608:
5603:
5598:
5593:
5588:
5583:
5578:
5573:
5568:
5563:
5558:
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5545:
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5534:
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5528:
5523:
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5513:
5508:
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5498:
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5488:
5483:
5478:
5473:
5468:
5463:
5458:
5452:
5450:
5444:
5443:
5441:
5440:
5435:
5430:
5425:
5420:
5415:
5410:
5405:
5400:
5395:
5390:
5385:
5380:
5375:
5370:
5365:
5360:
5355:
5353:Rainbow Bridge
5350:
5345:
5340:
5335:
5330:
5325:
5320:
5315:
5310:
5305:
5300:
5295:
5290:
5285:
5280:
5275:
5270:
5265:
5260:
5255:
5250:
5245:
5240:
5235:
5230:
5225:
5220:
5218:Freedom Riders
5215:
5210:
5205:
5200:
5195:
5190:
5185:
5180:
5178:Fort Frederica
5175:
5170:
5165:
5160:
5155:
5150:
5145:
5140:
5135:
5130:
5125:
5120:
5115:
5110:
5105:
5100:
5098:Castle Clinton
5095:
5090:
5085:
5080:
5075:
5070:
5065:
5060:
5055:
5050:
5045:
5040:
5035:
5030:
5025:
5020:
5015:
5009:
5007:
5001:
5000:
4995:
4993:
4992:
4985:
4978:
4970:
4961:
4960:
4958:
4957:
4949:
4946:
4945:
4942:
4941:
4939:
4938:
4933:
4928:
4923:
4918:
4916:Colorado Trail
4913:
4907:
4905:
4899:
4898:
4896:
4895:
4890:
4885:
4880:
4875:
4870:
4865:
4860:
4858:Round Mountain
4855:
4850:
4845:
4840:
4835:
4833:Mount McConnel
4830:
4825:
4820:
4815:
4810:
4805:
4800:
4795:
4790:
4785:
4780:
4775:
4770:
4765:
4760:
4754:
4752:
4743:
4737:
4736:
4733:
4732:
4730:
4729:
4724:
4719:
4714:
4709:
4704:
4699:
4694:
4689:
4687:Santa Fe Trail
4684:
4679:
4674:
4669:
4667:Mount Blue Sky
4664:
4659:
4654:
4649:
4644:
4639:
4637:Gold Belt Tour
4634:
4629:
4624:
4619:
4614:
4609:
4604:
4598:
4596:
4590:
4589:
4587:
4586:
4581:
4576:
4571:
4566:
4561:
4556:
4551:
4546:
4541:
4536:
4531:
4526:
4521:
4516:
4511:
4506:
4501:
4496:
4491:
4486:
4481:
4476:
4471:
4466:
4461:
4456:
4451:
4446:
4441:
4436:
4431:
4426:
4421:
4416:
4411:
4406:
4401:
4396:
4391:
4386:
4381:
4376:
4371:
4366:
4361:
4356:
4351:
4346:
4341:
4336:
4331:
4326:
4321:
4316:
4311:
4306:
4301:
4296:
4291:
4286:
4281:
4276:
4271:
4266:
4261:
4256:
4251:
4246:
4241:
4236:
4231:
4226:
4221:
4216:
4211:
4209:Dome Rock
4206:
4201:
4199:Dakota Hogback
4196:
4191:
4186:
4181:
4176:
4171:
4166:
4161:
4156:
4151:
4146:
4141:
4136:
4131:
4126:
4121:
4119:Arikaree River
4116:
4111:
4105:
4103:
4097:
4096:
4094:
4093:
4087:
4085:
4079:
4078:
4076:
4075:
4069:
4067:
4065:1 State Forest
4061:
4060:
4058:
4057:
4052:
4047:
4042:
4037:
4032:
4027:
4025:Steamboat Lake
4022:
4017:
4012:
4007:
4002:
3997:
3992:
3987:
3982:
3977:
3972:
3967:
3965:North Sterling
3962:
3957:
3952:
3947:
3942:
3937:
3932:
3927:
3922:
3917:
3912:
3907:
3902:
3897:
3892:
3887:
3882:
3877:
3872:
3867:
3862:
3857:
3852:
3847:
3842:
3836:
3834:
3832:43 State Parks
3825:
3819:
3818:
3815:
3814:
3812:
3811:
3805:
3803:
3797:
3796:
3794:
3793:
3788:
3783:
3778:
3773:
3768:
3763:
3758:
3753:
3748:
3743:
3738:
3733:
3728:
3723:
3718:
3712:
3710:
3704:
3703:
3701:
3700:
3698:Winks Panorama
3695:
3690:
3685:
3680:
3675:
3670:
3665:
3663:Red Rocks Park
3660:
3655:
3650:
3645:
3640:
3635:
3630:
3625:
3620:
3615:
3610:
3605:
3600:
3595:
3590:
3585:
3580:
3575:
3570:
3565:
3559:
3557:
3551:
3550:
3548:
3547:
3542:
3537:
3531:
3529:
3523:
3522:
3520:
3519:
3514:
3509:
3504:
3499:
3494:
3489:
3484:
3478:
3476:
3470:
3469:
3467:
3466:
3461:
3459:Gunnison Gorge
3456:
3450:
3448:
3442:
3441:
3439:
3438:
3433:
3428:
3423:
3418:
3413:
3411:South San Juan
3408:
3403:
3398:
3393:
3388:
3383:
3381:Ptarmigan Peak
3378:
3373:
3368:
3363:
3358:
3353:
3351:Mount Sneffels
3348:
3343:
3338:
3333:
3328:
3323:
3318:
3313:
3308:
3303:
3298:
3293:
3288:
3286:Gunnison Gorge
3283:
3278:
3273:
3268:
3263:
3258:
3253:
3248:
3243:
3238:
3233:
3228:
3223:
3217:
3215:
3209:
3208:
3206:
3205:
3200:
3194:
3192:
3186:
3185:
3183:
3182:
3177:
3172:
3167:
3162:
3157:
3152:
3147:
3142:
3137:
3132:
3126:
3124:
3118:
3117:
3115:
3114:
3108:
3106:
3100:
3099:
3097:
3096:
3094:Santa Fe Trail
3091:
3086:
3081:
3075:
3073:
3067:
3066:
3064:
3063:
3057:
3055:
3049:
3048:
3046:
3045:
3040:
3029:
3027:
3021:
3020:
3018:
3017:
3012:
3007:
3001:
2999:
2993:
2992:
2990:
2989:
2984:
2979:
2974:
2969:
2964:
2954:
2944:
2934:
2919:
2917:
2911:
2910:
2908:
2907:
2905:Rocky Mountain
2902:
2897:
2892:
2886:
2884:
2875:
2869:
2868:
2863:
2861:
2860:
2853:
2846:
2838:
2829:
2828:
2814:
2811:
2810:
2808:
2807:
2802:
2797:
2792:
2787:
2782:
2777:
2772:
2767:
2762:
2757:
2752:
2747:
2742:
2737:
2732:
2730:Eastern Plains
2727:
2721:
2719:
2713:
2712:
2710:
2709:
2704:
2699:
2694:
2689:
2684:
2679:
2674:
2669:
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2659:
2654:
2649:
2644:
2639:
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2629:
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2619:
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2609:
2604:
2599:
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2569:
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2554:
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2509:
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2326:
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2311:
2306:
2301:
2296:
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2256:
2251:
2246:
2241:
2236:
2231:
2226:
2221:
2216:
2211:
2206:
2201:
2196:
2191:
2189:Grand Junction
2186:
2181:
2176:
2171:
2166:
2161:
2156:
2151:
2146:
2141:
2136:
2131:
2126:
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2106:
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2056:
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2036:
2031:
2026:
2021:
2016:
2011:
2006:
2000:
1998:
1992:
1991:
1989:
1988:
1983:
1978:
1973:
1968:
1963:
1958:
1953:
1948:
1943:
1938:
1933:
1927:
1925:
1921:
1920:
1918:
1917:
1912:
1910:Transportation
1907:
1902:
1897:
1892:
1887:
1882:
1877:
1872:
1867:
1862:
1857:
1852:
1847:
1842:
1840:National Parks
1837:
1832:
1827:
1825:Municipalities
1822:
1817:
1812:
1807:
1802:
1797:
1792:
1787:
1782:
1777:
1772:
1767:
1762:
1757:
1752:
1750:Climate change
1747:
1742:
1737:
1731:
1729:
1723:
1722:
1714:
1711:
1710:
1701:
1699:
1698:
1691:
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1676:
1670:
1669:
1661:
1660:External links
1658:
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1563:
1554:
1545:
1530:
1514:
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1490:
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1469:
1457:
1438:
1429:
1405:Cross, Whitman
1396:
1382:
1351:
1345:978-1588341075
1344:
1285:
1262:
1251:(5): 459–463.
1235:
1214:
1185:
1149:
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1142:
1137:
1132:
1126:
1118:
1115:
1109:
1106:
1096:
1093:
1075:
1072:
1019:pirate perches
1001:
998:
850:
847:
833:
830:
778:
775:
719:
716:
685:
682:
636:
633:
613:Leo Lesquereux
602:petrified wood
592:
589:
551:
550:
545:
541:
540:
535:
531:
530:
527:
523:
522:
518:1969-August-20
512:
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467:
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2:
6405:
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6173:
6170:
6169:
6167:
6163:
6157:
6154:
6152:
6149:
6147:
6146:West Virginia
6144:
6142:
6139:
6137:
6134:
6132:
6129:
6127:
6124:
6122:
6119:
6117:
6114:
6112:
6109:
6107:
6104:
6102:
6099:
6097:
6094:
6092:
6089:
6087:
6084:
6082:
6079:
6077:
6074:
6072:
6069:
6067:
6064:
6062:
6059:
6057:
6054:
6052:
6051:New Hampshire
6049:
6047:
6044:
6042:
6039:
6037:
6034:
6032:
6029:
6027:
6024:
6022:
6019:
6017:
6014:
6012:
6011:Massachusetts
6009:
6007:
6004:
6002:
5999:
5997:
5994:
5992:
5989:
5987:
5984:
5982:
5979:
5977:
5974:
5972:
5969:
5967:
5964:
5962:
5959:
5957:
5954:
5952:
5949:
5947:
5944:
5942:
5939:
5937:
5934:
5932:
5929:
5927:
5924:
5922:
5919:
5917:
5914:
5912:
5909:
5906:
5903:
5902:
5900:
5896:
5890:
5887:
5885:
5882:
5880:
5877:
5875:
5872:
5870:
5867:
5865:
5862:
5860:
5857:
5856:
5854:
5850:
5846:
5839:
5834:
5832:
5827:
5825:
5820:
5819:
5816:
5806:
5805:
5799:
5793:
5790:
5788:
5785:
5783:
5780:
5778:
5775:
5773:
5770:
5768:
5765:
5763:
5760:
5758:
5755:
5753:
5750:
5748:
5747:Hanford Reach
5745:
5743:
5742:Castner Range
5740:
5738:
5735:
5734:
5732:
5729:
5725:
5721:
5717:
5712:
5708:
5703:
5697:
5694:
5692:
5689:
5687:
5684:
5682:
5679:
5677:
5674:
5672:
5669:
5667:
5664:
5662:
5659:
5657:
5654:
5652:
5649:
5647:
5646:Mojave Trails
5644:
5642:
5639:
5637:
5634:
5632:
5629:
5627:
5624:
5622:
5619:
5617:
5614:
5612:
5609:
5607:
5604:
5602:
5599:
5597:
5596:Carrizo Plain
5594:
5592:
5589:
5587:
5584:
5582:
5581:Browns Canyon
5579:
5577:
5574:
5572:
5569:
5567:
5564:
5562:
5559:
5557:
5554:
5552:
5549:
5548:
5546:
5544:
5538:
5532:
5529:
5527:
5524:
5522:
5519:
5517:
5514:
5512:
5509:
5507:
5504:
5502:
5499:
5497:
5494:
5492:
5491:Giant Sequoia
5489:
5487:
5484:
5482:
5479:
5477:
5476:Browns Canyon
5474:
5472:
5469:
5467:
5464:
5462:
5459:
5457:
5454:
5453:
5451:
5449:
5445:
5439:
5436:
5434:
5431:
5429:
5428:Walnut Canyon
5426:
5424:
5421:
5419:
5416:
5414:
5411:
5409:
5406:
5404:
5401:
5399:
5396:
5394:
5391:
5389:
5386:
5384:
5381:
5379:
5376:
5374:
5371:
5369:
5366:
5364:
5361:
5359:
5356:
5354:
5351:
5349:
5348:Poverty Point
5346:
5344:
5341:
5339:
5336:
5334:
5331:
5329:
5326:
5324:
5321:
5319:
5316:
5314:
5311:
5309:
5306:
5304:
5301:
5299:
5296:
5294:
5291:
5289:
5286:
5284:
5281:
5279:
5276:
5274:
5271:
5269:
5266:
5264:
5261:
5259:
5256:
5254:
5251:
5249:
5248:Grand Portage
5246:
5244:
5241:
5239:
5236:
5234:
5231:
5229:
5226:
5224:
5221:
5219:
5216:
5214:
5211:
5209:
5206:
5204:
5201:
5199:
5196:
5194:
5191:
5189:
5186:
5184:
5183:Fort Matanzas
5181:
5179:
5176:
5174:
5171:
5169:
5166:
5164:
5161:
5159:
5156:
5154:
5153:Effigy Mounds
5151:
5149:
5146:
5144:
5141:
5139:
5136:
5134:
5131:
5129:
5126:
5124:
5121:
5119:
5116:
5114:
5111:
5109:
5106:
5104:
5101:
5099:
5096:
5094:
5091:
5089:
5086:
5084:
5081:
5079:
5076:
5074:
5071:
5069:
5066:
5064:
5061:
5059:
5056:
5054:
5051:
5049:
5046:
5044:
5041:
5039:
5036:
5034:
5031:
5029:
5026:
5024:
5021:
5019:
5016:
5014:
5011:
5010:
5008:
5006:
5002:
4998:
4991:
4986:
4984:
4979:
4977:
4972:
4971:
4968:
4956:
4955:
4951:
4950:
4947:
4937:
4934:
4932:
4931:Paradox Trail
4929:
4927:
4924:
4922:
4919:
4917:
4914:
4912:
4909:
4908:
4906:
4904:
4900:
4894:
4891:
4889:
4886:
4884:
4881:
4879:
4876:
4874:
4871:
4869:
4866:
4864:
4861:
4859:
4856:
4854:
4851:
4849:
4846:
4844:
4841:
4839:
4836:
4834:
4831:
4829:
4826:
4824:
4821:
4819:
4816:
4814:
4813:Highline Loop
4811:
4809:
4806:
4804:
4801:
4799:
4796:
4794:
4791:
4789:
4786:
4784:
4781:
4779:
4776:
4774:
4773:Big Dry Creek
4771:
4769:
4766:
4764:
4761:
4759:
4756:
4755:
4753:
4751:
4747:
4744:
4742:
4738:
4728:
4727:West Elk Loop
4725:
4723:
4720:
4718:
4715:
4713:
4710:
4708:
4705:
4703:
4700:
4698:
4695:
4693:
4692:Silver Thread
4690:
4688:
4685:
4683:
4680:
4678:
4675:
4673:
4670:
4668:
4665:
4663:
4660:
4658:
4655:
4653:
4650:
4648:
4647:Guanella Pass
4645:
4643:
4640:
4638:
4635:
4633:
4630:
4628:
4625:
4623:
4620:
4618:
4615:
4613:
4610:
4608:
4605:
4603:
4600:
4599:
4597:
4595:
4591:
4585:
4582:
4580:
4577:
4575:
4572:
4570:
4567:
4565:
4562:
4560:
4557:
4555:
4552:
4550:
4547:
4545:
4542:
4540:
4537:
4535:
4532:
4530:
4527:
4525:
4522:
4520:
4517:
4515:
4512:
4510:
4507:
4505:
4502:
4500:
4497:
4495:
4492:
4490:
4487:
4485:
4482:
4480:
4477:
4475:
4472:
4470:
4467:
4465:
4462:
4460:
4459:Redcloud Peak
4457:
4455:
4452:
4450:
4447:
4445:
4442:
4440:
4437:
4435:
4432:
4430:
4427:
4425:
4422:
4420:
4417:
4415:
4412:
4410:
4407:
4405:
4402:
4400:
4397:
4395:
4392:
4390:
4387:
4385:
4382:
4380:
4377:
4375:
4372:
4370:
4367:
4365:
4362:
4360:
4357:
4355:
4352:
4350:
4347:
4345:
4342:
4340:
4337:
4335:
4332:
4330:
4327:
4325:
4322:
4320:
4317:
4315:
4314:Indian Spring
4312:
4310:
4307:
4305:
4302:
4300:
4297:
4295:
4292:
4290:
4287:
4285:
4282:
4280:
4277:
4275:
4272:
4270:
4267:
4265:
4262:
4260:
4257:
4255:
4252:
4250:
4247:
4245:
4242:
4240:
4237:
4235:
4232:
4230:
4227:
4225:
4222:
4220:
4217:
4215:
4212:
4210:
4207:
4205:
4202:
4200:
4197:
4195:
4192:
4190:
4189:Corral Bluffs
4187:
4185:
4182:
4180:
4177:
4175:
4172:
4170:
4167:
4165:
4162:
4160:
4157:
4155:
4152:
4150:
4147:
4145:
4142:
4140:
4137:
4135:
4132:
4130:
4127:
4125:
4122:
4120:
4117:
4115:
4112:
4110:
4107:
4106:
4104:
4102:
4098:
4092:
4089:
4088:
4086:
4084:
4080:
4074:
4071:
4070:
4068:
4066:
4062:
4056:
4053:
4051:
4048:
4046:
4045:Trinidad Lake
4043:
4041:
4038:
4036:
4035:Sweitzer Lake
4033:
4031:
4028:
4026:
4023:
4021:
4018:
4016:
4013:
4011:
4008:
4006:
4003:
4001:
3998:
3996:
3993:
3991:
3988:
3986:
3983:
3981:
3978:
3976:
3973:
3971:
3968:
3966:
3963:
3961:
3958:
3956:
3953:
3951:
3948:
3946:
3943:
3941:
3938:
3936:
3933:
3931:
3928:
3926:
3923:
3921:
3918:
3916:
3913:
3911:
3910:Highline Lake
3908:
3906:
3903:
3901:
3898:
3896:
3893:
3891:
3888:
3886:
3883:
3881:
3878:
3876:
3873:
3871:
3868:
3866:
3863:
3861:
3858:
3856:
3853:
3851:
3848:
3846:
3843:
3841:
3838:
3837:
3835:
3833:
3829:
3826:
3824:
3820:
3810:
3807:
3806:
3804:
3802:
3798:
3792:
3789:
3787:
3784:
3782:
3779:
3777:
3776:Spanish Peaks
3774:
3772:
3769:
3767:
3764:
3762:
3761:Russell Lakes
3759:
3757:
3754:
3752:
3749:
3747:
3744:
3742:
3739:
3737:
3734:
3732:
3729:
3727:
3724:
3722:
3719:
3717:
3714:
3713:
3711:
3709:
3705:
3699:
3696:
3694:
3691:
3689:
3686:
3684:
3681:
3679:
3676:
3674:
3671:
3669:
3666:
3664:
3661:
3659:
3656:
3654:
3651:
3649:
3646:
3644:
3641:
3639:
3636:
3634:
3631:
3629:
3626:
3624:
3621:
3619:
3616:
3614:
3611:
3609:
3606:
3604:
3601:
3599:
3596:
3594:
3591:
3589:
3586:
3584:
3581:
3579:
3576:
3574:
3571:
3569:
3566:
3564:
3561:
3560:
3558:
3556:
3552:
3546:
3543:
3541:
3538:
3536:
3533:
3532:
3530:
3528:
3524:
3518:
3515:
3513:
3510:
3508:
3505:
3503:
3500:
3498:
3495:
3493:
3490:
3488:
3485:
3483:
3480:
3479:
3477:
3475:
3471:
3465:
3462:
3460:
3457:
3455:
3452:
3451:
3449:
3447:
3443:
3437:
3434:
3432:
3429:
3427:
3424:
3422:
3419:
3417:
3416:Spanish Peaks
3414:
3412:
3409:
3407:
3404:
3402:
3399:
3397:
3394:
3392:
3389:
3387:
3384:
3382:
3379:
3377:
3374:
3372:
3369:
3367:
3364:
3362:
3359:
3357:
3354:
3352:
3349:
3347:
3346:Mount Massive
3344:
3342:
3339:
3337:
3334:
3332:
3329:
3327:
3324:
3322:
3319:
3317:
3314:
3312:
3309:
3307:
3304:
3302:
3299:
3297:
3294:
3292:
3291:Hermosa Creek
3289:
3287:
3284:
3282:
3279:
3277:
3274:
3272:
3269:
3267:
3264:
3262:
3259:
3257:
3254:
3252:
3251:Comanche Peak
3249:
3247:
3244:
3242:
3239:
3237:
3234:
3232:
3231:Buffalo Peaks
3229:
3227:
3224:
3222:
3219:
3218:
3216:
3214:
3210:
3204:
3201:
3199:
3196:
3195:
3193:
3191:
3187:
3181:
3178:
3176:
3173:
3171:
3168:
3166:
3163:
3161:
3158:
3156:
3153:
3151:
3148:
3146:
3143:
3141:
3138:
3136:
3133:
3131:
3128:
3127:
3125:
3123:
3119:
3113:
3110:
3109:
3107:
3105:
3101:
3095:
3092:
3090:
3087:
3085:
3082:
3080:
3077:
3076:
3074:
3072:
3068:
3062:
3059:
3058:
3056:
3054:
3050:
3044:
3041:
3038:
3034:
3031:
3030:
3028:
3026:
3022:
3016:
3013:
3011:
3008:
3006:
3003:
3002:
3000:
2998:
2994:
2988:
2985:
2983:
2980:
2978:
2975:
2973:
2970:
2968:
2965:
2962:
2958:
2955:
2952:
2948:
2945:
2942:
2938:
2935:
2932:
2928:
2924:
2923:Browns Canyon
2921:
2920:
2918:
2916:
2912:
2906:
2903:
2901:
2898:
2896:
2893:
2891:
2888:
2887:
2885:
2883:
2879:
2876:
2874:
2870:
2866:
2859:
2854:
2852:
2847:
2845:
2840:
2839:
2836:
2826:
2825:
2812:
2806:
2803:
2801:
2798:
2796:
2793:
2791:
2788:
2786:
2783:
2781:
2778:
2776:
2773:
2771:
2768:
2766:
2763:
2761:
2758:
2756:
2753:
2751:
2748:
2746:
2743:
2741:
2738:
2736:
2733:
2731:
2728:
2726:
2723:
2722:
2720:
2718:
2714:
2708:
2705:
2703:
2700:
2698:
2695:
2693:
2690:
2688:
2685:
2683:
2680:
2678:
2675:
2673:
2670:
2668:
2665:
2663:
2660:
2658:
2655:
2653:
2650:
2648:
2645:
2643:
2640:
2638:
2635:
2633:
2630:
2628:
2625:
2623:
2620:
2618:
2615:
2613:
2610:
2608:
2605:
2603:
2600:
2598:
2595:
2593:
2590:
2588:
2585:
2583:
2580:
2578:
2575:
2573:
2570:
2568:
2565:
2563:
2560:
2558:
2555:
2553:
2550:
2548:
2545:
2543:
2540:
2538:
2535:
2533:
2530:
2528:
2525:
2523:
2520:
2518:
2515:
2513:
2510:
2508:
2505:
2503:
2500:
2498:
2495:
2493:
2490:
2488:
2485:
2483:
2480:
2478:
2475:
2473:
2470:
2468:
2465:
2463:
2460:
2458:
2455:
2453:
2450:
2448:
2445:
2443:
2440:
2438:
2435:
2433:
2430:
2428:
2425:
2423:
2420:
2418:
2415:
2413:
2410:
2408:
2405:
2403:
2400:
2398:
2395:
2393:
2390:
2389:
2387:
2385:
2381:
2375:
2372:
2370:
2367:
2365:
2364:Woodland Park
2362:
2360:
2357:
2355:
2352:
2350:
2347:
2345:
2342:
2340:
2337:
2335:
2332:
2330:
2327:
2325:
2322:
2320:
2317:
2315:
2312:
2310:
2307:
2305:
2302:
2300:
2297:
2295:
2292:
2290:
2287:
2285:
2282:
2280:
2277:
2275:
2272:
2270:
2267:
2265:
2262:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2230:
2227:
2225:
2222:
2220:
2217:
2215:
2214:Idaho Springs
2212:
2210:
2207:
2205:
2202:
2200:
2197:
2195:
2192:
2190:
2187:
2185:
2182:
2180:
2177:
2175:
2172:
2170:
2167:
2165:
2162:
2160:
2157:
2155:
2152:
2150:
2147:
2145:
2142:
2140:
2137:
2135:
2132:
2130:
2127:
2125:
2122:
2120:
2117:
2115:
2112:
2110:
2107:
2105:
2102:
2100:
2099:Cripple Creek
2097:
2095:
2092:
2090:
2087:
2085:
2084:Commerce City
2082:
2080:
2077:
2075:
2072:
2070:
2067:
2065:
2062:
2060:
2057:
2055:
2052:
2050:
2047:
2045:
2042:
2040:
2037:
2035:
2032:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2010:
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2002:
2001:
1999:
1997:
1993:
1987:
1984:
1982:
1979:
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1969:
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1798:
1796:
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1791:
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1783:
1781:
1778:
1776:
1773:
1771:
1770:Federal lands
1768:
1766:
1763:
1761:
1758:
1756:
1753:
1751:
1748:
1746:
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1738:
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1509:
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1491:
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1476:
1474:
1470:
1464:
1462:
1458:
1453:
1449:
1442:
1439:
1433:
1430:
1418:
1414:
1410:
1406:
1400:
1397:
1385:
1383:9780813724355
1379:
1375:
1371:
1367:
1360:
1358:
1356:
1352:
1347:
1341:
1337:
1330:
1328:
1326:
1324:
1322:
1320:
1318:
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1314:
1312:
1310:
1308:
1306:
1304:
1302:
1300:
1298:
1296:
1294:
1292:
1290:
1286:
1273:
1266:
1263:
1258:
1254:
1250:
1246:
1239:
1236:
1224:
1218:
1215:
1211:
1195:
1189:
1186:
1174:
1170:
1166:
1165:
1160:
1154:
1151:
1145:
1141:
1138:
1136:
1133:
1130:
1127:
1124:
1121:
1120:
1116:
1114:
1108:Paleoaltitude
1107:
1105:
1101:
1095:Paleohabitats
1094:
1092:
1088:
1084:
1080:
1073:
1071:
1068:
1064:
1059:
1057:
1053:
1049:
1045:
1041:
1037:
1035:
1031:
1027:
1022:
1020:
1016:
1012:
1008:
999:
997:
995:
989:
987:
983:
979:
975:
971:
967:
963:
959:
955:
951:
947:
943:
939:
935:
931:
927:
923:
919:
915:
911:
907:
903:
899:
895:
891:
884:
880:
879:
874:
870:
868:
864:
860:
856:
849:Invertebrates
848:
846:
843:
839:
838:invertebrates
831:
829:
825:
822:
817:
813:
811:
807:
803:
799:
798:coast redwood
795:
794:
783:
776:
771:
766:
762:
759:
756:
752:
748:
742:
739:
730:
729:
724:
717:
715:
711:
709:
705:
697:
696:
690:
683:
681:
677:
675:
670:
667:
663:
659:
655:
650:
641:
634:
632:
628:
626:
622:
618:
614:
610:
609:Hayden Survey
605:
603:
598:
590:
588:
586:
582:
578:
574:
570:
566:
562:
558:
549:
546:
542:
539:
536:
532:
528:
524:
513:
505:
501:
496:
468:
464:
461:
458:
450:
446:
445:Teller County
443:
418:
393:
383:
376:
371:
366:
365:IUCN category
361:
356:
328:
300:
290:
286:
282:
278:
274:
271:
268:
264:
259:
256:
255:United States
245:
241:
238:
235:
231:
226:
198:
196:
192:
187:
184:
181:
177:
172:
168:
164:
161:
157:
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150:
147:
144:
140:
136:
130:
125:
112:
107:
102:
97:
92:
87:
82:
77:
72:
67:
62:
57:
51:
44:
40:
36:
31:
19:
6111:South Dakota
6101:Rhode Island
6096:Pennsylvania
6076:North Dakota
5802:
5676:Sand to Snow
5526:Sand to Snow
5501:Misty Fjords
5486:Chimney Rock
5423:Waco Mammoth
5368:Scotts Bluff
5358:Russell Cave
5323:Oregon Caves
5258:Hohokam Pima
5213:Fossil Butte
5203:Fort Stanwix
5198:Fort Pulaski
5188:Fort McHenry
5143:Devils Tower
5108:Cedar Breaks
4952:
4848:Poudre River
4823:Mineral Belt
4677:Peak to Peak
4584:Zapata Falls
4399:Narraguinnep
4369:Mini-Wheeler
4073:State Forest
4015:State Forest
3915:Jackson Lake
3895:Fishers Peak
3865:Cherry Creek
3731:Hanging Lake
3683:Temple Aaron
3628:Lowry Pueblo
3426:Vasquez Peak
3406:Sarvis Creek
3371:Platte River
3366:Never Summer
3356:Mount Zirkel
3306:Indian Peaks
3271:Fossil Ridge
2957:Chimney Rock
2815:
2149:Fort Collins
2069:Central City
2059:Castle Pines
1966:Homelessness
1946:Demographics
1915:Wildernesses
1845:Paleontology
1735:Bibliography
1715:
1649:
1640:
1630:
1617:
1580:. Retrieved
1576:
1566:
1557:
1548:
1508:
1484:
1451:
1447:
1441:
1432:
1420:. Retrieved
1416:
1412:
1399:
1387:. Retrieved
1373:
1369:
1335:
1276:. Retrieved
1265:
1248:
1244:
1238:
1227:. Retrieved
1217:
1201:. Retrieved
1188:
1176:. Retrieved
1162:
1153:
1111:
1102:
1098:
1089:
1085:
1081:
1077:
1074:Paleoclimate
1060:
1038:
1023:
1003:
990:
942:web-spinners
918:grasshoppers
888:
876:
852:
835:
826:
820:
818:
814:
801:
791:
788:
743:
734:
726:
712:
701:
693:
678:
671:
669:lake floor.
646:
629:
606:
596:
594:
580:
556:
554:
284:Year defined
261:Type section
6232:Other areas
6192:Puerto Rico
6026:Mississippi
5941:Connecticut
5556:Avi Kwa Ame
5438:Yucca House
5338:Pipe Spring
5193:Fort Monroe
5068:Camp Nelson
5033:Aztec Ruins
4828:Mount Evans
4788:Devils Head
4657:Lariat Loop
4602:Alpine Loop
4454:Raven Ridge
4055:Yampa River
4040:Sylvan Lake
3985:Rifle Falls
3930:Lake Pueblo
3885:Eleven Mile
3786:Summit Lake
3507:Rocky Flats
3502:Monte Vista
3497:Browns Park
3421:Uncompahgre
3341:Mount Evans
3321:Lizard Head
3261:Eagles Nest
3180:White River
3175:Uncompahgre
2987:Yucca House
2770:High Plains
2442:Clear Creek
2359:Wheat Ridge
2354:Westminster
2279:Monte Vista
2159:Fort Morgan
2154:Fort Lupton
1971:LGBT rights
1577:www.nps.gov
1056:brontothere
1048:brontothere
1000:Vertebrates
970:butterflies
950:snake flies
930:cockroaches
914:damselflies
910:dragonflies
881:, a fossil
842:vertebrates
810:angiosperms
649:Proterozoic
490: /
478:105°17′11″W
466:Coordinates
220: /
208:105°17′13″W
195:Coordinates
43:Late Eocene
6322:Categories
6141:Washington
6061:New Mexico
6056:New Jersey
5931:California
5616:Gold Butte
5571:Bears Ears
5466:Bears Ears
5333:Petroglyph
5308:Muir Woods
5268:Jewel Cave
5208:Fort Union
5158:El Malpais
5123:Chiricahua
4863:Swamp Park
4798:Grays Peak
4783:Crag Crest
4768:Bear Creek
4642:Grand Mesa
4469:Roxborough
4010:Stagecoach
3995:Roxborough
3975:Pearl Lake
3905:Harvey Gap
3766:Sand Creek
3756:Roxborough
3751:Raton Mesa
3658:Raton Pass
3648:Pikes Peak
3545:South Park
3376:Powderhorn
3336:Mesa Verde
3326:Lost Creek
3311:James Peak
3296:Holy Cross
3236:Byers Peak
3165:San Isabel
3155:Rio Grande
3135:Grand Mesa
2900:Mesa Verde
2697:Washington
2677:San Miguel
2657:Rio Grande
2652:Rio Blanco
2572:Las Animas
2552:Kit Carson
2427:Broomfield
2349:Walsenburg
2309:Rocky Ford
2289:Northglenn
2264:Louisville
2239:Las Animas
2064:Centennial
2054:Cañon City
2049:Burlington
2039:Broomfield
2024:Black Hawk
1855:Prehistory
1780:Government
1760:Coloradans
1582:2022-05-05
1454:(1): 1–16.
1422:28 October
1389:28 October
1229:2018-04-09
1203:2012-05-13
1146:References
1135:Vim Wright
1067:amphibians
1034:shorebirds
996:(snails).
994:gastropods
966:mosquitoes
902:gall mites
894:harvestmen
859:millipedes
855:arthropods
777:Paleoflora
768:Petrified
674:Cretaceous
597:Florissant
561:Florissant
511:Authorized
475:38°54′49″N
205:38°54′50″N
6151:Wisconsin
6116:Tennessee
6021:Minnesota
5996:Louisiana
5792:Tule Lake
5551:Agua Fria
5541:Bureau of
5403:Tule Lake
5383:Stonewall
5343:Pipestone
5283:Lava Beds
5263:Hovenweep
5038:Bandelier
5028:Aniakchak
4878:Vail Pass
4873:Two Ponds
4818:Lake Fork
4005:St. Vrain
3990:Rifle Gap
3940:Lone Mesa
3860:Chatfield
3850:Boyd Lake
3845:Barr Lake
3517:Two Ponds
3431:Weminuche
3316:La Garita
3266:Flat Tops
3160:Roosevelt
3043:Curecanti
2982:Hovenweep
2602:Montezuma
2542:Jefferson
2407:Archuleta
2254:Lone Tree
2249:Littleton
2244:Leadville
2224:Lafayette
2129:Englewood
2124:Edgewater
1956:Education
1865:Railroads
1820:Mountains
1775:Geography
1765:Elections
1720:(capital)
1178:August 8,
1050:, and an
1015:catfishes
954:lacewings
890:Arachnids
863:ostracods
627:in 1894.
595:The name
266:Named for
174:Lithology
166:Thickness
146:Formation
6307:Category
6136:Virginia
6086:Oklahoma
6066:New York
6041:Nebraska
6031:Missouri
6016:Michigan
6006:Maryland
5991:Kentucky
5971:Illinois
5946:Delaware
5936:Colorado
5926:Arkansas
5636:Jurassic
5611:Fort Ord
5511:Newberry
5413:Tuzigoot
5163:El Morro
5148:Dinosaur
5128:Colorado
5063:Cabrillo
4529:Staunton
4249:Fairview
4020:Staunton
3875:Crawford
3436:West Elk
3198:Comanche
3170:San Juan
3140:Gunnison
2972:Dinosaur
2967:Colorado
2682:Sedgwick
2672:San Juan
2667:Saguache
2632:Phillips
2607:Montrose
2557:La Plata
2532:Huerfano
2527:Hinsdale
2522:Gunnison
2507:Garfield
2452:Costilla
2437:Cheyenne
2402:Arapahoe
2384:Counties
2339:Trinidad
2334:Thornton
2329:Sterling
2319:Sheridan
2284:Montrose
2269:Loveland
2259:Longmont
2229:Lakewood
2219:La Junta
2204:Gunnison
2174:Glendale
2164:Fountain
2144:Florence
2034:Brighton
1981:Religion
1976:Politics
1961:Gun laws
1931:Abortion
1890:Timeline
1815:Military
1755:Colleges
1707:Colorado
1591:cite web
1503:195-198.
1407:(1894).
1376:: 1–18.
1117:See also
1063:reptiles
1052:oreodont
934:termites
926:katydids
922:crickets
906:Mayflies
867:mollusks
526:Visitors
449:Colorado
441:Location
276:Named by
237:Colorado
189:Location
152:Overlies
6253:Related
6156:Wyoming
6131:Vermont
6036:Montana
5976:Indiana
5956:Georgia
5951:Florida
5921:Arizona
5911:Alabama
5705:Other (
5433:Wupatki
4868:Two Elk
3980:Ridgway
3955:Mueller
3935:Lathrop
3890:Elkhead
3487:Arapaho
3482:Alamosa
3386:Raggeds
3130:Arapaho
3033:Arapaho
2873:Federal
2717:Regions
2642:Prowers
2592:Mineral
2577:Lincoln
2567:Larimer
2537:Jackson
2502:Fremont
2492:El Paso
2482:Douglas
2477:Dolores
2457:Crowley
2447:Conejos
2432:Chaffee
2422:Boulder
2397:Alamosa
2209:Holyoke
2194:Greeley
2119:Durango
2029:Boulder
2004:Alamosa
1951:Economy
1941:Culture
1924:Society
1885:Symbols
1875:Slavery
1830:Museums
1790:History
1745:Outline
1635:685-696
1623:diptera
1278:29 June
1245:Geology
1044:opossum
1040:Mammals
1030:rollers
1011:suckers
1007:bowfins
958:beetles
946:cicadas
938:earwigs
770:redwood
747:diatoms
718:Fossils
658:caldera
635:Geology
591:History
544:Website
516: (
243:Country
179:Primary
117:↓
6091:Oregon
6046:Nevada
5986:Kansas
5961:Hawaii
5916:Alaska
5852:Topics
5318:Navajo
4778:Calico
4741:Trails
4359:McElmo
4279:Gothic
3970:Paonia
3960:Navajo
3950:Mancos
3203:Pawnee
3005:Amache
2692:Teller
2687:Summit
2647:Pueblo
2637:Pitkin
2612:Morgan
2597:Moffat
2512:Gilpin
2497:Elbert
2472:Denver
2462:Custer
2344:Victor
2314:Salida
2299:Pueblo
2184:Golden
2169:Fruita
2114:Denver
2104:Dacono
2089:Cortez
2019:Aurora
2009:Arvada
1996:Cities
1986:Sports
1905:Trails
1870:Rivers
1795:Images
1727:Topics
1717:Denver
1380:
1342:
1197:(XLSX)
1026:cuckoo
1017:, and
865:; and
758:blooms
755:diatom
738:lahars
731:flower
704:Guffey
666:Lahars
577:diatom
569:Eocene
252:
233:Region
6223:Palau
6121:Texas
6001:Maine
5966:Idaho
5398:Tonto
3823:State
3391:Rawah
3361:Neota
2662:Routt
2622:Ouray
2617:Otero
2582:Logan
2547:Kiowa
2517:Grand
2487:Eagle
2467:Delta
2392:Adams
2304:Rifle
2294:Ouray
2234:Lamar
2134:Evans
2109:Delta
2094:Craig
2044:Brush
2014:Aspen
1936:Crime
1900:Towns
1810:Lists
1740:Index
1703:State
978:wasps
974:moths
962:flies
832:Fauna
751:biota
662:lahar
583:is a
279:Cross
183:Shale
6177:Guam
6126:Utah
6081:Ohio
5981:Iowa
5728:Army
5724:USAF
5720:NOAA
5716:AFRH
4763:Barr
4758:Apex
4050:Vega
3945:Lory
3492:Baca
3150:Pike
3037:USFS
2961:USFS
2941:USFS
2931:USFS
2707:Yuma
2702:Weld
2627:Park
2587:Mesa
2562:Lake
2417:Bent
2412:Baca
2374:Yuma
2369:Wray
1597:link
1424:2021
1417:GF-7
1391:2021
1378:ISBN
1340:ISBN
1280:2015
1180:2012
1032:and
986:ants
982:bees
896:and
883:wasp
555:The
503:Area
287:1894
142:Type
56:PreꞒ
5711:DOE
5707:FWS
2951:BLM
2927:BLM
1805:Law
1705:of
1374:435
1253:doi
1065:or
6324::
5726:,
5722:,
5718:,
5709:,
1605:^
1593:}}
1589:{{
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1533:^
1517:^
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1472:^
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1354:^
1288:^
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1167:.
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1013:,
1009:,
984:,
980:,
976:,
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968:,
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960:,
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940:,
936:,
932:,
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924:,
920:,
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908:,
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563:,
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158:,
106:Pg
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111:N
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