534:
389:
The flora of
Wannagan is quite well preserved in some cases, with evidence of insect feeding found on many fossils. Most of the fossils have modern equivalents. The list of
280:
539:
130:(formerly Bullion Creek Formation). The rocks of this deposit, reaching a thickness of over 60 m, consist of yellow to tan, poorly lithified
92:
28:
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509:
229:
are the dominant animal type preserved at
Wannagan. The largest animal (~4 meters in length) found at the site is the
544:
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162:
between the two formations is roughly 6 m above the site. The
Sentinel Butte contains an extensive stump-bearing
151:
127:
482:
275:
ancestors: 3 meters (10 ft) in length versus 1.5 meters (4.5 ft) for the largest
515:
Paleobiology
Database: One Mile North of Wannagan Creek Quarry: Late/Upper Paleocene, North Dakota
529:
302:
63:
swampy lowland and forests. Preservation is excellent for both the flora and fauna of the site.
335:
200:
96:
297:
56:
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163:
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426:
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64:
36:
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402:
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are found at
Wannagan. All are small compared to modern mammals, the largest being
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32:
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have studied the site for nearly thirty years. The site is thought to represent a
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44:
462:
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100:
40:
159:
470:
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is unusual among
Paleocene reptiles in that it is larger than its known
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154:. This formation is generally gray to brown in color but is similar in
147:
84:
510:
Paleobiology
Database: Wannagan Creek Quarry: Tiffanian, North Dakota
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284:
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108:
24:
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to the Tongue River. The
Sentinel Butte is roughly 90 m thick. The
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120:
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351:
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116:
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champsosaurs. Reptiles as a whole decreased in size after the
126:
The
Wannagan Site is found in the upper portion of the
95:. The rock units are likely sediments derived from the
142:with a lesser amounts of interbedded fine-grained
500:Paleontology of Theodore Roosevelt National Park
257:of the fauna. The second largest reptile is the
535:Cenozoic paleontological sites of North America
506:Theodore Roosevelt National Park's Paleontology
8:
453:. Additional plants found at the site are
223:that may have hunted on the forest floor.
27:site found just west of the South Unit of
203:. The largest mammal at the site is the
83:The topography of the site is that of a
283:. Other reptiles include soft-shelled
281:Cretaceous–Paleogene extinction event
7:
182:-sized. Preserved mammals include a
166:bed above the contact at the site.
14:
213:. An additional mammal fossil is
330:-like shore bird. The two types
29:Theodore Roosevelt National Park
326:, an unnamed water bird, and a
16:Fossil site in North Dakota, US
498:North Dakota Geological Survey
150:. The site is overlain by the
1:
540:Paleontology in North Dakota
219:, a weasel sized member of
75:have also been discovered.
53:Science Museum of Minnesota
561:
393:at Wannagan Creek include
334:found at Wannagan are the
253:is also thought to be the
504:The National Park Service
322:from Wannagan include an
43:in age, approximately 60
339:Piceorpeton willwoodense
152:Sentinel Butte Formation
372:Gomphaeschna schrankii
128:Tongue River Formation
486:(with link directory)
93:Little Missouri River
545:1969 in paleontology
483:List of fossil sites
367:. Additionally, the
242:(formerly known as
21:Wannagan Creek site
79:Topography/Geology
381:have been found.
45:million years old
552:
336:giant salamander
305:snakes, and the
201:multituberculate
186:-like primitive
99:deposited in an
97:Laramide orogeny
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551:
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520:
519:
494:
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349:include fossil
307:snapping turtle
298:Wannaganosuchus
289:varanid lizards
251:B. formidabilis
172:
81:
57:paleoenviroment
49:Paleontologists
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11:
5:
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492:External links
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489:
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386:
383:
379:Ephemeropteran
171:
168:
164:petrified wood
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39:. The site is
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427:dawn redwoods
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355:, freshwater
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312:Protochelydra
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263:Champsosaurus
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255:apex predator
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238:Borealosuchus
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103:dominated by
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87:, due to the
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65:Trace fossils
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58:
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38:
34:
30:
26:
22:
485:
469:, and water-
403:bald cypress
388:
378:
371:
350:
338:
318:
310:
296:
268:
261:
250:
247:formidabilis
245:Leidyosuchus
243:
240:formidabilis
236:
225:
214:
208:
191:
173:
125:
82:
69:crocodilians
33:North Dakota
20:
18:
431:hackberries
293:alligatorid
259:champsosaur
234:crocodilian
89:downcutting
73:vertebrates
61:subtropical
524:Categories
447:mulberries
332:amphibians
303:palaeophid
291:, a small
277:Cretaceous
221:Viverridae
210:Phenacodus
207:herbivore
205:condylarth
144:sandstones
140:siltstones
132:claystones
71:and other
530:Paleocene
463:bur-reeds
439:sycamores
435:sassafras
423:magnolias
419:fig trees
369:dragonfly
231:eusuchian
216:Protictis
156:lithology
136:mudstones
101:ecosystem
41:Paleocene
477:See also
471:plantago
467:cattails
443:cherries
407:dogwoods
374:and the
314:zangerli
273:Mesozoic
269:C. gigas
227:Reptiles
198:arboreal
193:Ptilodus
184:squirrel
457:vines,
401:trees,
295:called
285:turtles
188:primate
176:mammals
160:contact
148:lignite
109:streams
91:of the
85:badland
51:of the
451:cycads
449:, and
399:ginkgo
376:mayfly
365:bowfin
363:, and
328:plover
309:-like
138:, and
121:swamps
119:, and
105:rivers
25:fossil
459:lotus
455:grape
395:palms
391:trees
385:Flora
343:frogs
320:Birds
265:gigas
196:, an
180:sheep
174:Many
170:Fauna
117:lakes
113:ponds
23:is a
415:elms
411:oaks
357:rays
352:Esox
347:Fish
341:and
324:ibis
190:and
146:and
19:The
361:gar
301:,
249:).
67:of
59:of
31:of
526::
473:.
465:,
461:,
445:,
441:,
437:,
433:,
429:,
425:,
421:,
417:,
413:,
409:,
405:,
397:,
359:,
345:.
316:.
287:,
267:.
134:,
123:.
115:,
111:,
107:,
47:.
37:US
35:,
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