853:
115:
793:
517:
Williamson, Thomas E.; Kirkland, James I.; Lucas, Spencer G. (1993). "Selachians from the
Greenhorn Cyclothem ("Middle" Cretaceous: Cenomanian–Turonian), Black Mesa, Arizona, and the Paleogeographic distribution of Late Cretaceous selachians".
553:
Leidy (1856) - Notice of remains of extinct vertebrated animals of New-Jersey, collected by Prof. Cook of the State
Geological Survey under the direction of Dr. W. Kitchell. Proceedings of the Academy of Natural Sciences of Philadelphia, 8:
544:
ESTES, R. (1964) Fossil vertebrates from the Late
Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49: 1–180, 73 fig., 5 pl.
1026:
837:
739:
916:
897:
931:
1021:
981:
971:
713:
1066:
921:
1011:
926:
591:"The first skeletal record of the enigmatic Cretaceous sawfish genus Ptychotrygon (Chondrichthyes, Batoidea) from the Turonian of Morocco"
1071:
830:
653:
936:
890:
1006:
976:
951:
1081:
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823:
883:
1036:
1031:
966:
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1001:
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991:
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1076:
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1041:
956:
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1016:
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478:
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130:
770:
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610:
460:
427:
405:
192:
867:
807:
757:
602:
590:
527:
435:
494:
470:
434:. Despite formerly being classified within a family of extinct sawfish-like rays known as
412:
165:
910:
622:
420:
72:
852:
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447:
224:
215:
800:
726:
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Villalobos‐Segura, Eduardo; Underwood, Charlie J.; Ward, David J. (2019).
685:
408:
153:
87:
82:
67:
62:
52:
792:
718:
469:
Fossils of the genus have been found in Canada, the United States, the
452:
431:
247:
102:
77:
731:
606:
141:
662:
401:
863:
705:
451:
form a distinct clade that groups closer with the extant family
666:
871:
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379:
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204:
189:
675:
891:
831:
8:
898:
884:
838:
824:
663:
113:
31:
1027:Late Cretaceous animals of South America
430:closely resembling that of a modern-day
512:
510:
506:
438:, phylogenetic analyses indicate that
917:Prehistoric cartilaginous fish genera
27:Extinct genus of cartilaginous fishes
7:
849:
847:
789:
787:
870:. You can help Knowledge (XXG) by
810:. You can help Knowledge (XXG) by
459:, possibly rendering the suborder
25:
1022:Prehistoric fish of South America
982:Cretaceous fish of North America
851:
791:
972:Paleogene fish of North America
565:"Fossilworks: Sclerorhynchidae"
1:
1067:Fossil taxa described in 1856
932:Cretaceous–Paleogene boundary
922:Cretaceous cartilaginous fish
1012:Fossils of the United States
927:Paleocene cartilaginous fish
1098:
1072:Prehistoric Batoidea stubs
846:
786:
455:, which contains the true
937:Cretaceous fish of Africa
654:The Paleobiology Database
532:10.1017/s002233600003691x
353:Weiler & Albers, 1964
253:
246:
230:
223:
131:Scientific classification
129:
121:
112:
34:
1007:Cretaceous United States
426:It had a large, toothed
309:Cappetta & Case 1975
977:Paleogene United States
952:Cretaceous fish of Asia
595:Papers in Palaeontology
520:Journal of Paleontology
1082:Cretaceous fish stubs
962:Fossils of Uzbekistan
859:This article about a
766:Paleobiology Database
491:Quiriquina Formation
799:This article about
656:accessed on 8/21/09
487:El Molino Formation
477:of Uzbekistan, the
1037:Fossils of Bolivia
1032:Cretaceous Bolivia
967:Bissekty Formation
493:of Chile, and the
483:Dukamaje Formation
479:Tamayama Formation
475:Bissekty Formation
1062:Sclerorhynchoidei
1002:Fossils of Mexico
997:Cretaceous Mexico
992:Fossils of Canada
987:Cretaceous Canada
879:
878:
819:
818:
781:
780:
753:Open Tree of Life
669:Taxon identifiers
607:10.1002/spp2.1287
461:Sclerorhynchoidei
393:
392:
387:
376:
365:
354:
343:
332:
321:
310:
291:
272:
193:Sclerorhynchoidei
16:(Redirected from
1089:
1077:Rajiformes stubs
1047:Fossils of Chile
1042:Cretaceous Chile
957:Fossils of Japan
947:Fossils of Niger
942:Cretaceous Niger
900:
893:
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855:
848:
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586:
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489:of Bolivia, the
436:Sclerorhynchidae
385:
381:
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363:
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352:
348:
341:
339:I. hartenbergeri
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40:Temporal range:
32:
21:
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1057:Fossils of Peru
1052:Cretaceous Peru
1017:Demopolis Chalk
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569:fossilworks.org
563:
562:
558:
552:
548:
543:
539:
516:
515:
508:
503:
495:Chota Formation
473:of Mexico, the
471:Aguja Formation
413:Late Cretaceous
406:sclerorhynchoid
242:
239:
236:Ischyrhiza mira
219:
213:
212:
195:
180:
168:
156:
144:
125:rostral spines
123:Ischyrhiza mira
108:
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43:Late Cretaceous
42:
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38:
28:
23:
22:
18:Ischyrhiza mira
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12:
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526:(3): 447–474.
505:
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485:of Niger, the
481:of Japan, the
400:is an extinct
391:
390:
389:
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377:
366:
364:Cappetta, 1981
355:
344:
342:Cappetta, 1975
333:
328:I. nigeriensis
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166:Chondrichthyes
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429:
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421:Maastrichtian
418:
414:
410:
407:
403:
399:
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386:(Clark, 1895)
384:
378:
375:(Leidy, 1856)
373:
367:
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345:
340:
334:
331:Tabaste, 1963
329:
323:
318:
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307:
301:
299:
293:
288:
282:
280:
279:I. marrocanus
274:
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37:
33:
30:
19:
872:expanding it
858:
812:expanding it
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594:
584:
572:. Retrieved
568:
559:
549:
540:
523:
519:
468:
464:paraphyletic
448:Onchopristis
446:
440:Ischyrhiza,
439:
425:
396:
395:
394:
382:
371:
360:
350:I. germaniae
349:
338:
327:
320:Nessov, 1997
316:
305:
297:
286:
278:
268:I. avonicola
267:
259:
235:
234:
225:Type species
208:
207:
122:
35:
29:
801:prehistoric
727:iNaturalist
642:Fossilworks
601:: 353–376.
574:17 December
442:Schizorhiza
298:I. stromeri
290:Leidy, 1856
271:Estes, 1964
260:I. antiquus
241:Leidy, 1856
911:Categories
861:Cretaceous
804:Rajiformes
677:Ischyrhiza
637:Ischyrhiza
501:References
417:Cenomanian
397:Ischyrhiza
383:I. radiata
372:I. antiqua
209:Ischyrhiza
185:Suborder:
178:Rajiformes
36:Ischyrhiza
623:210302939
615:2056-2802
497:of Peru.
411:from the
361:I. viaudi
306:I. texana
137:Kingdom:
686:Wikidata
317:I. serra
154:Chordata
149:Phylum:
142:Animalia
758:3595351
745:1057297
719:4824857
706:4655141
692:Q887854
554:220–221
453:Rajidae
432:sawfish
428:rostrum
287:I. mira
248:Species
200:Genus:
173:Order:
161:Class:
732:709544
621:
613:
457:skates
445:, and
218:, 1856
866:is a
806:is a
771:34688
740:IRMNG
619:S2CID
402:genus
216:Leidy
868:stub
864:fish
808:stub
714:GBIF
644:.org
611:ISSN
576:2021
48:PreꞒ
701:EoL
640:at
603:doi
528:doi
423:).
409:ray
404:of
913::
768::
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729::
716::
703::
688::
617:.
609:.
597:.
593:.
567:.
524:67
522:.
509:^
466:.
98:Pg
899:e
892:t
885:v
874:.
839:e
832:t
825:v
814:.
625:.
605::
599:7
578:.
534:.
530::
419:-
415:(
380:†
369:†
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314:†
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295:†
284:†
276:†
265:†
257:†
232:†
205:†
190:†
103:N
93:K
88:J
83:T
78:P
73:C
68:D
63:S
58:O
53:Ꞓ
20:)
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