122:
520:
564:
388:
588:
583:
603:
613:
466:
557:
550:
598:
121:
333:. The size of its teeth indicate a length of up to 9 m (30 ft), which would make it one of the largest animals of the
608:
357:
593:
419:
492:
286:
stage, approximately 303.4–298.9 million years ago. There is a small gap in age between the latest
116:
497:
457:
479:
484:
199:
534:
259:
186:
163:
577:
334:
68:
298:
might have evolved to fit into an ecological niche left vacant by the extinction of
530:
442:
329:, but the tooth whorl has an open spiral shape, more loosely coiled than that of
527:
451:
173:
43:
275:
88:
53:
133:
93:
37:
519:
436:
283:
153:
83:
78:
63:
58:
48:
30:
471:
98:
73:
393:, a little-known Helicoprion-like shark: The story behind the article"
143:
413:
271:
255:
417:
310:
suggests, but does not prove, that it is a direct ancestor of
538:
426:
558:
8:
565:
551:
414:
20:
358:"†Campyloprion Eastman 1902 (chimaera)"
346:
589:Carboniferous animals of North America
16:Extinct genus of shark-like eugenodont
584:Prehistoric cartilaginous fish genera
282:from Russia. The fossils date to the
7:
604:Prehistoric cartilaginous fish stubs
516:
514:
382:
380:
378:
352:
350:
14:
614:Carboniferous cartilaginous fish
518:
120:
1:
537:. You can help Knowledge by
630:
513:
229:
224:
117:Scientific classification
115:
23:
325:teeth resemble those of
294:, which suggests that
599:Carboniferous animals
526:This article about a
493:Paleobiology Database
278:in United States and
262:fish. Two species of
258:of large shark-like
609:Holocephali stubs
546:
545:
508:
507:
480:Open Tree of Life
420:Taxon identifiers
247:
246:
220:
36:303.4–298.9
621:
567:
560:
553:
522:
515:
501:
500:
488:
487:
475:
474:
462:
461:
460:
447:
446:
445:
415:
408:
407:
405:
403:
397:researchgate.net
384:
373:
372:
370:
368:
354:
302:. The fact that
218:
211:
198:
185:
125:
124:
110:
40:
29:Temporal range:
21:
629:
628:
624:
623:
622:
620:
619:
618:
574:
573:
572:
571:
511:
509:
504:
496:
491:
483:
478:
470:
465:
456:
455:
450:
441:
440:
435:
422:
412:
411:
401:
399:
386:
385:
376:
366:
364:
362:fossilworks.org
356:
355:
348:
343:
320:
217:
209:
200:Helicoprionidae
196:
183:
119:
111:
109:
108:
107:
106:
101:
96:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
35:
34:
27:
17:
12:
11:
5:
627:
625:
617:
616:
611:
606:
601:
596:
594:Eugeneodontida
591:
586:
576:
575:
570:
569:
562:
555:
547:
544:
543:
523:
506:
505:
503:
502:
489:
476:
463:
448:
432:
430:
424:
423:
418:
410:
409:
387:Itano, Wayne.
374:
345:
344:
342:
339:
319:
316:
306:is older than
290:and the first
254:is an extinct
245:
244:
243:
242:
236:
227:
226:
222:
221:
207:
203:
202:
194:
190:
189:
187:Eugeneodontida
181:
177:
176:
171:
167:
166:
164:Chondrichthyes
161:
157:
156:
151:
147:
146:
141:
137:
136:
131:
127:
126:
113:
112:
104:
103:
102:
97:
92:
87:
82:
77:
72:
67:
62:
57:
52:
47:
42:
41:
28:
15:
13:
10:
9:
6:
4:
3:
2:
626:
615:
612:
610:
607:
605:
602:
600:
597:
595:
592:
590:
587:
585:
582:
581:
579:
568:
563:
561:
556:
554:
549:
548:
542:
540:
536:
532:
529:
524:
521:
517:
512:
499:
494:
490:
486:
481:
477:
473:
468:
464:
459:
453:
449:
444:
438:
434:
433:
431:
429:
425:
421:
416:
398:
394:
392:
383:
381:
379:
375:
363:
359:
353:
351:
347:
340:
338:
336:
335:Carboniferous
332:
328:
324:
317:
315:
313:
309:
305:
301:
297:
293:
289:
285:
281:
277:
273:
269:
265:
261:
257:
253:
252:
241:
237:
235:
231:
230:
228:
223:
219:Eastman, 1902
216:
215:
208:
205:
204:
201:
195:
192:
191:
188:
182:
179:
178:
175:
172:
169:
168:
165:
162:
159:
158:
155:
152:
149:
148:
145:
142:
139:
138:
135:
132:
129:
128:
123:
118:
114:
100:
95:
90:
85:
80:
75:
70:
65:
60:
55:
50:
45:
39:
32:
26:
22:
19:
539:expanding it
531:holocephalan
525:
510:
458:Campyloprion
428:Campyloprion
427:
400:. Retrieved
396:
391:Campyloprion
390:
365:. Retrieved
361:
330:
326:
323:Campyloprion
322:
321:
311:
307:
304:Campyloprion
303:
299:
296:Campyloprion
295:
292:Campyloprion
291:
287:
279:
268:C. annectans
267:
264:Campyloprion
263:
251:Campyloprion
250:
249:
248:
239:
234:C. annectans
233:
214:Campyloprion
213:
212:
25:Campyloprion
24:
18:
528:prehistoric
452:Wikispecies
331:Helicoprion
327:Helicoprion
318:Description
312:Helicoprion
308:Helicoprion
266:are known,
174:Holocephali
578:Categories
443:Q108072526
341:References
280:C. ivanovi
276:New Mexico
260:eugenodont
240:C. ivanovi
170:Subclass:
402:27 August
367:27 August
140:Kingdom:
134:Eukaryota
437:Wikidata
337:period.
284:Gzhelian
225:Species
193:Family:
154:Chordata
150:Phylum:
144:Animalia
130:Domain:
31:Gzhelian
485:4145180
472:4825191
300:Edestus
288:Edestus
206:Genus:
180:Order:
160:Class:
105:↓
533:is a
498:34450
272:Texas
270:from
256:genus
535:stub
467:GBIF
404:2023
369:2023
274:and
44:PreꞒ
314:.
580::
495::
482::
469::
454::
439::
395:.
377:^
360:.
349:^
94:Pg
38:Ma
33:,
566:e
559:t
552:v
541:.
406:.
389:"
371:.
238:†
232:†
210:†
197:†
184:†
99:N
89:K
84:J
79:T
74:P
69:C
64:D
59:S
54:O
49:Ꞓ
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
