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609:. The lenses themselves were very rounded instead of largely flat. The eyes were mounted on turret-like structures which could swivel, providing the animal with an almost 360-degree field of view. This type of eye is known as the schizochroal eye.
538:
would be hidden in a tiny shelter made of its own body. Although this safety feature often helped them to evade predators, occasionally it backfired and the trilobite would be buried under heavy sediment. Their
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is a reference to a common frog), its fairly large size (up to 6 inches long), and its habit of rolling up into a ball like a
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McRoberts, Christopher A.; Hegna, Thomas A.; Burke, Jeri J.; Stice, Morgan L.; Mize, Steven K.; Martin, Markus J.
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is found in the northeastern U.S, southwestern
Ontario, and in Morocco; North America was attached to the
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770:"Original spotted patterns on Middle Devonian phacopid trilobites from western and central New York"
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on the outside as protection. Many other trilobites possessed the same ability, but
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Some of the information in this article was taken from the website
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can still be found in balled-up positions 400 million years later.
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676:"Reflections on Phacops rana (Green), Pennsylvania's State Fossil"
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643:(Trilobita) from the Middle Devonian of North-West Africa"
461:
Because of its abundance and popularity with collectors,
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by the state's
General Assembly on December 5, 1988.
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60:. Unsourced material may be challenged and removed.
738:"Valdosta State University Virtual Fossil Museum"
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530:nearly perfected it. The slightest amount of
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120:Learn how and when to remove this message
514:"). In order to protect themselves from
629:
450:are found chiefly in the northeastern
522:would roll into a ball with its hard
7:
1769:Devonian trilobites of North America
637:Burton, C. J.; Eldredge, N. (1974).
58:adding citations to reliable sources
730:A Guide to the Orders of Trilobites
498:(which remind some observers of a
25:
1284:Permian–Triassic extinction event
593:The most striking feature of the
903:
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534:would trigger their senses, and
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34:
589:, with schizochroal eye visible
494:can be recognized by its large
45:needs additional citations for
574:from an outcrop of the Middle
1:
1789:Fossil taxa described in 1832
1774:Devonian trilobites of Africa
27:Extinct species of trilobite
601:and its relatives is their
418:Burton & Eldredge, 1974
378:Burton & Eldredge, 1974
1810:
757:Eldredgeops (Phacops) rana
502:'s eyes—the specific name
1632:
1148:Charles Doolittle Walcott
995:Profallotaspis jakutensis
901:
383:E. rana crassituberculata
366:
361:
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225:Scientific classification
223:
214:
136:
1779:Jeffersonville Limestone
1125:Notable trilobitologists
755:Color reconstruction of
656:(2): 349. Archived from
407:E. rana paucituberculata
1784:Symbols of Pennsylvania
1319:Beecher's Trilobite Bed
1192:George Frederic Matthew
1153:Charles Emerson Beecher
639:"Two new subspecies of
1364:Silica Shale Formation
1202:Brian D. E. Chatterton
1133:Alexander von Humboldt
620:
616:Distinguishing eye of
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488:
1736:Paleobiology Database
1237:Gerhard K. B. Alberti
1143:Alfred Russel Wallace
674:Harper, John (2013).
615:
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558:during the Devonian.
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399:E. rana norwoodiensis
1314:Anti-Atlas Mountains
1306:Notable fossil sites
1247:Johan Wilhelm Dalman
1222:Gregory D. Edgecombe
1197:Harry B. Whittington
761:www.emilydamstra.com
735:Picture courtesy of
683:Pennsylvania Geology
579:Mahantango Formation
415:E. rana tindoufensis
54:improve this article
1635:Category:Trilobites
1374:Walcott–Rust quarry
1002:Serrania gordaensis
721:Paleontology portal
465:was designated the
454:, and southwestern
1794:Fossils of Morocco
1359:Maotianshan Shales
1265:Cambrian explosion
1227:Bruce S. Lieberman
1158:Roderick Murchison
891:List of trilobites
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438:) is a species of
69:"Eldredgeops rana"
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1650:Taxon identifiers
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1242:Teiichi Kobayashi
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732:, by Sam Gon III.
707:Arthropods portal
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16:(Redirected from
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1138:Joachim Barrande
1113:Acanthopluerella
1055:Pseudophillipsia
981:Hupetina antiqua
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599:Eldredgeops rana
572:Eldredgeops rana
552:Eldredgeops rana
536:Eldredgeops rana
528:Eldredgeops rana
520:Eldredgeops rana
492:Eldredgeops rana
485:Eldredgeops rana
463:Eldredgeops rana
442:from the middle
429:Eldredgeops rana
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142:Temporal range:
138:Eldredgeops rana
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1600:Internal organs
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1582:Soft body parts
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1354:Llandeilo Group
1344:Jince Formation
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1168:Rudolf Kaufmann
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1065:First described
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1034:Carniphillipsia
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957:Notable fossils
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663:on 2013-11-04.
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1379:Wenlock Group
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650:Palaeontology
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556:African Plate
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547:Fossilisation
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356:(Green, 1832)
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65:Find sources:
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43:This article
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1688:Phacops rana
1658:Phacops rana
1657:
1620:Sensory pits
1568:Subisopygous
1513:Heteronomous
1508:Gonatoparian
1450:Pleural lobe
1349:Latham Shale
1288:
1278:Diplichnites
1276:
1269:
1257:Paleobiology
1182:Martin Basse
1177:Emma Richter
1096:
1089:
1071:
1053:
1046:
1039:
1032:
1025:
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993:
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756:
745:. Retrieved
742:Phacops Rana
741:
686:
682:
669:
658:the original
653:
649:
641:Phacops rana
640:
632:
617:
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587:Pennsylvania
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470:state fossil
467:Pennsylvania
462:
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435:Phacops rana
434:
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428:
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370:E. rana rana
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329:E. rana
328:
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52:Please help
47:verification
44:
18:Phacops rana
1710:iNaturalist
1682:Wikispecies
1605:Musculature
1543:Micropygous
1538:Macropygous
1498:Genal angle
1460:Terminology
1413:Exoskeleton
1394:Wren's Nest
988:Lunagraulos
853:Redlichiida
524:exoskeleton
476:Description
402:Stumm, 1953
386:Stumm, 1953
362:Subspecies
315:Eldredgeops
1764:Phacopidae
1758:Categories
1590:Appendages
1518:Homonomous
1478:Enrollment
1473:Effacement
1445:Axial lobe
1404:Morphology
1290:Rusophycus
1098:Hungioides
1027:Cheiropyge
973:Fritzapsis
927:Ordovician
808:Trilobites
747:August 22,
689:(2): 3–10.
624:References
595:morphology
432:(formerly
301:Phacopidae
262:Arthropoda
80:newspapers
1563:Spinosity
1553:Proparian
1533:Librigena
1528:Isopygous
1523:Hypostome
1468:Cranidium
863:Phacopida
848:Harpetida
833:Agnostida
583:Milesburg
570:Enrolled
516:predators
512:volvation
440:trilobite
322:Species:
288:Phacopida
275:Trilobita
248:Kingdom:
242:Eukaryota
1728:10544025
1673:Q7179955
1667:Wikidata
1610:Antennae
1558:Prosopon
1503:Glabella
1488:Fixigena
1440:Pygidium
1430:Cephalon
1271:Cruziana
1108:Smallest
1091:Isotelus
1073:Calymene
1041:Kathwaia
1020:Acropyge
965:Earliest
937:Devonian
932:Silurian
922:Cambrian
868:Proetida
838:Asaphida
816:Taxonomy
576:Devonian
532:sediment
508:pill bug
444:Devonian
294:Family:
258:Phylum:
252:Animalia
238:Domain:
110:May 2011
1702:4633031
1422:Tagmata
1083:Largest
947:Permian
858:Lichida
541:fossils
487:fossils
456:Ontario
448:fossils
347:†
326:†
307:Genus:
281:Order:
268:Class:
94:scholar
1741:190459
1715:317791
1435:Thorax
1175:&
1012:Latest
883:Genera
825:Orders
607:sclera
96:
89:
82:
75:
67:
1723:IRMNG
679:(PDF)
661:(PDF)
646:(PDF)
581:near
101:JSTOR
87:books
1697:GBIF
1615:Eyes
1493:Gena
975:spp.
749:2005
603:eyes
504:rana
500:frog
496:eyes
150:Preęž’
73:news
759:at
597:of
56:by
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