115:
137:
637:"Freshwater stingrays of the Green River Formation of Wyoming (early Eocene), with the description of a new genus and species and an analysis of its phylogenetic relationships (Chondrichthyes, Myliobatiformes)"
579:
are found. The genus has a long tail which is very slender, often missing the tip, sporting small spines along the dorsal midline. The tail provides up to half of the total body length.
742:
478:
based on illustrations of Fowler's type specimen, characterizing the more rounded appearance as an artifact of the incomplete nature of Marsh's holotype.
729:
422:, USA. The specimen was collected from an outcrop of Fossil Lake and presents a dorsal view of the fish. It was first studied by prolific American
811:
806:
415:
410:
816:
555:
are small and closely spaced. The teeth are triangular and shaped for feeding on small fish, crustaceans, and mollusks.
465:
460:
435:
136:
652:
447:
Though the description by Cope is more complete and includes an illustration of his type specimen, the old name
114:
496:
684:
419:
768:
426:
379:
375:
274:
255:
470:
The specimen, which was subsequently lost, was noted for having a more rounded or disc like body than
801:
716:
617:
Grande, Lance (1984), "Paleontology of the Green River
Formation, with a review of the fish fauna",
796:
440:
513:
reached up to about 50 centimetres (20 in) in length. As in modern stingrays the genders are
390:
is one of only two known rays to have been found in the Green River formation; the other species,
664:
283:
131:
537:, though individuals are often found with less than three. The genus is considered to have been
773:
755:
747:
514:
452:
218:
760:
656:
648:
351:
526:
348:
208:
559:
is notably abundant at the same site on Fossil Lake where the only Green River
Formation
430:
423:
188:
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790:
72:
668:
542:
392:
367:
17:
565:
547:
443:, rival to Marsh, published a description for a ray specimen giving it the name
47:
371:
354:
92:
57:
707:
148:
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575:
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67:
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52:
734:
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77:
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published a very brief description of a ray genus he dubbed
653:
10.1206/0003-0090(2004)284<0001:FSOTGR>2.0.CO;2
691:
357:. At present the genus contains the single species
641:Bulletin of the American Museum of Natural History
635:Carvalho, M.R.; Maisey, J.G.; Grande, L. (2004).
404:The genus was described from a single incomplete
495:meaning "skate" or "ray." The derivation of the
619:Bulletin of the Wyoming State Geological Survey
414:, currently residing in the collections of the
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628:
396:, was only recognized and described in 2004.
8:
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679:
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113:
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502:is not mentioned in Marsh's description.
588:
525:individuals have up to three modified
366:The genus is known primarily from the
378:deposits. Fossil Lake is part of the
27:Extinct genus of cartilaginous fishes
7:
25:
416:Peabody Museum of Natural History
135:
474:The genus was synonymized with
812:Cenozoic fish of North America
429:. He published his brief 1877
1:
807:Fossil taxa described in 1877
485:is a derivation of the words
541:in nature. As in the modern
461:Academy of Natural Sciences
459:based on a partly restored
436:American Journal of Science
833:
400:History and classification
621:, 63 2nd ed., Laramie, WY
289:
282:
261:
254:
132:Scientific classification
130:
121:
112:
34:
517:, with males possessing
451:has seniority. In 1947
491:meaning "the sun" and
457:Palaeodasybatis discus
445:Xiphotrygon acutidens.
420:New Haven, Connecticut
302:Palaeodasybatis discus
817:Green River Formation
769:Paleobiology Database
566:Procambarus primaevus
427:Othniel Charles Marsh
393:Asterotrygon maloneyi
380:Green River Formation
310:Xiphotrygon acutidens
481:The generic epithet
441:Edward Drinker Cope
439:. Two years later
360:Heliobatis radians
268:Heliobatis radians
124:Heliobatis radians
18:Heliobatis radians
784:
783:
756:Open Tree of Life
685:Taxon identifiers
576:Bechleja rostrata
529:, forming barbed
463:specimen, number
453:Henry Weed Fowler
408:specimen, number
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16:(Redirected from
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527:dermal denticles
497:specific epithet
431:type description
321:
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40:Temporal range:
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349:Myliobatiformes
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247:H. radians
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209:Myliobatiformes
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424:paleontologist
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189:Elasmobranchii
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179:Chondrichthyes
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551:the teeth of
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382:in southwest
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297:Haseman, 1912
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256:Binomial name
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368:Early Eocene
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305:Fowler, 1947
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232:
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195:Superorder:
123:
43:Early Eocene
35:
29:
802:Eocene fish
533:, on their
506:Description
472:Heliobatis.
376:Fossil Lake
322:Romer, 1971
318:Xyphotrygus
797:Dasyatidae
791:Categories
693:Heliobatis
583:References
557:Heliobatis
553:Heliobatis
523:Heliobatis
511:Heliobatis
483:Heliobatis
476:Heliobatis
466:ANSP 89344
449:Heliobatis
388:Heliobatis
372:Wasatchian
355:Dasyatidae
333:Heliobatis
313:Cope, 1879
233:Heliobatis
219:Dasyatidae
185:Subclass:
36:Heliobatis
647:: 1β136.
515:dimorphic
240:Species:
155:Kingdom:
149:Eukaryota
702:Wikidata
669:83986811
661:2246/452
561:crayfish
539:demersal
531:stingers
519:claspers
406:holotype
345:stingray
320:species
295:species
293:Dasyatis
284:Synonyms
215:Family:
199:Batoidea
169:Chordata
165:Phylum:
159:Animalia
145:Domain:
761:7649034
748:1417283
735:4825032
722:4655240
708:Q203710
500:radians
433:in the
411:YPM 528
384:Wyoming
374:stage,
347:in the
338:extinct
265:†
244:†
225:Genus:
205:Order:
175:Class:
126:fossil
667:
572:prawns
545:genus
493:batis,
488:helios
352:family
336:is an
277:, 1877
774:52956
743:IRMNG
665:S2CID
543:skate
535:tails
341:genus
275:Marsh
122:Male
730:GBIF
570:and
548:Raja
48:Preκ
717:EoL
657:hdl
649:doi
645:284
343:of
793::
771::
758::
745::
732::
719::
704::
663:.
655:.
643:.
639:.
627:^
591:^
563:,
521:.
418:,
386:.
370:,
363:.
98:Pg
671:.
659::
651::
568:,
468:.
229:β
103:N
93:K
88:J
83:T
78:P
73:C
68:D
63:S
58:O
53:κ
20:)
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