198:
72:
96:
120:
39:
829:
43:
177:
157:
133:
839:
49:
834:
824:
497:
744:
707:
463:
8:
665:
650:
640:
273:
320:
221:
414:
345:
231:
24:
788:
759:
734:
697:
670:
625:
605:
529:
382:
350:
288:
93:
20:
620:
485:
448:
387:
377:
325:
181:
124:
76:
16:
137:
805:
754:
739:
717:
675:
655:
595:
590:
534:
512:
480:
362:
330:
161:
117:
100:
818:
749:
729:
635:
610:
549:
517:
424:
392:
340:
246:
32:
28:
154:
793:
660:
458:
372:
251:
241:
712:
600:
573:
539:
409:
283:
278:
216:
783:
771:
680:
630:
615:
585:
561:
544:
507:
502:
468:
453:
436:
419:
404:
335:
211:
692:
367:
315:
303:
236:
226:
702:
645:
256:
298:
60:
This category has the following 6 subcategories, out of 6 total.
293:
261:
197:
The following 96 pages are in this category, out of 96 total.
31:
between 443.8 and 419.2 million years ago, during the
816:
194:Pages in category "Silurian first appearances"
199:This list may not reflect recent changes
817:
40:Category:Ordovician first appearances
55:
44:Category:Devonian first appearances
13:
203:
62:
54:
14:
851:
73:Extant Silurian first appearances
97:Silurian genus first appearances
50:Category: Silurian extinctions
1:
192:
121:Llandovery first appearances
7:
830:Paleozoic first appearances
10:
856:
47:
37:
178:Wenlock first appearances
158:Pridoli first appearances
134:Ludlow first appearances
38:See also the preceding
840:Silurian fossil record
498:Lechritrochoceratidae
745:Traquairaspidiformes
708:Spathognathodontidae
464:Hemiphragmoceratidae
666:Pseudorthoceratidae
651:Proetus (trilobite)
641:Polyelasmoceratidae
274:Bellerophon (genus)
42:and the succeeding
321:Cephalaspidomorphi
222:Acaste (trilobite)
415:Eucalyptocrinites
346:Cyathaspidiformes
232:Acleistoceratidae
847:
789:Waeringopteridae
760:Trimeroceratidae
735:Thelodontiformes
698:Sinotectirostrum
671:Pteraspidiformes
626:Phragmoceratidae
606:Parastylonuridae
530:Mandaloceratidae
383:Drepanophycaceae
351:Cyathocrinitidae
289:Brevicoceratidae
183:
163:
156:
139:
126:
119:
102:
95:
78:
855:
854:
850:
849:
848:
846:
845:
844:
835:Silurian events
815:
814:
813:
812:
811:
810:
798:
776:
764:
722:
685:
621:Phlebolepididae
578:
566:
554:
522:
490:
486:Kokomopteroidea
473:
449:Hardieopteridae
441:
429:
397:
388:Drepanophycales
378:Dolichopteridae
355:
326:Choanoceratidae
308:
266:
191:
190:
189:
188:
185:
184:
168:
165:
164:
153:
144:
141:
140:
128:
127:
116:
107:
104:
103:
92:
83:
80:
79:
53:
52:
46:
25:Silurian Period
17:Biological taxa
12:
11:
5:
853:
843:
842:
837:
832:
827:
809:
808:
806:Zosterophyllum
802:
799:
797:
796:
791:
786:
780:
777:
775:
774:
768:
765:
763:
762:
757:
755:Trigonotarbida
752:
747:
742:
740:Tolypelepidida
737:
732:
726:
723:
721:
720:
718:Spyroceratidae
715:
710:
705:
700:
695:
689:
686:
684:
683:
678:
676:Pteraspidoidei
673:
668:
663:
658:
656:Pseudoniscidae
653:
648:
643:
638:
633:
628:
623:
618:
613:
608:
603:
598:
596:Parakionoceras
593:
591:Palaeoniscidae
588:
582:
579:
577:
576:
570:
567:
565:
564:
558:
555:
553:
552:
547:
542:
537:
535:Marsupiocrinus
532:
526:
523:
521:
520:
515:
513:Logania (fish)
510:
505:
500:
494:
491:
489:
488:
483:
481:Kokomopteridae
477:
474:
472:
471:
466:
461:
456:
451:
445:
442:
440:
439:
433:
430:
428:
427:
422:
417:
412:
407:
401:
398:
396:
395:
390:
385:
380:
375:
370:
365:
363:Dimerocrinites
359:
356:
354:
353:
348:
343:
338:
333:
331:Chonioconarida
328:
323:
318:
312:
309:
307:
306:
301:
296:
291:
286:
281:
276:
270:
267:
265:
264:
259:
254:
249:
244:
239:
234:
229:
224:
219:
214:
208:
205:
204:
195:
187:
186:
176:
175:
172:
169:
167:
166:
152:
151:
148:
145:
143:
142:
132:
131:
129:
115:
114:
111:
108:
106:
105:
91:
90:
87:
84:
82:
81:
71:
70:
67:
64:
63:
58:
21:first appeared
9:
6:
4:
3:
2:
852:
841:
838:
836:
833:
831:
828:
826:
825:Silurian life
823:
822:
820:
807:
804:
803:
800:
795:
792:
790:
787:
785:
782:
781:
778:
773:
770:
769:
766:
761:
758:
756:
753:
751:
750:Traquairaspis
748:
746:
743:
741:
738:
736:
733:
731:
730:Terebratulida
728:
727:
724:
719:
716:
714:
711:
709:
706:
704:
701:
699:
696:
694:
691:
690:
687:
682:
679:
677:
674:
672:
669:
667:
664:
662:
659:
657:
654:
652:
649:
647:
644:
642:
639:
637:
636:Pleurodictyum
634:
632:
629:
627:
624:
622:
619:
617:
614:
612:
611:Pasternakevia
609:
607:
604:
602:
599:
597:
594:
592:
589:
587:
584:
583:
580:
575:
572:
571:
568:
563:
560:
559:
556:
551:
550:Mycteropoidea
548:
546:
543:
541:
538:
536:
533:
531:
528:
527:
524:
519:
518:Lowoceratidae
516:
514:
511:
509:
506:
504:
501:
499:
496:
495:
492:
487:
484:
482:
479:
478:
475:
470:
467:
465:
462:
460:
457:
455:
452:
450:
447:
446:
443:
438:
435:
434:
431:
426:
425:Eurypteroidea
423:
421:
418:
416:
413:
411:
408:
406:
403:
402:
399:
394:
393:Drepanopterus
391:
389:
386:
384:
381:
379:
376:
374:
371:
369:
366:
364:
361:
360:
357:
352:
349:
347:
344:
342:
341:Cyamocephalus
339:
337:
334:
332:
329:
327:
324:
322:
319:
317:
314:
313:
310:
305:
302:
300:
297:
295:
292:
290:
287:
285:
282:
280:
277:
275:
272:
271:
268:
263:
260:
258:
255:
253:
250:
248:
247:Antigyroceras
245:
243:
240:
238:
235:
233:
230:
228:
225:
223:
220:
218:
215:
213:
210:
209:
206:
202:
200:
193:
179:
174:
173:
170:
159:
155:
150:
149:
146:
135:
130:
122:
118:
113:
112:
109:
98:
94:
89:
88:
85:
74:
69:
68:
65:
61:
57:Subcategories
56:
51:
45:
41:
36:
34:
33:Paleozoic Era
30:
29:geologic time
26:
22:
18:
794:Weigeltaspis
661:Pseudoniscus
459:Heloplacidae
373:Discosoridae
252:Archipelepis
242:Anomphalidae
196:
59:
15:
713:Spiriferina
601:Paralejurus
574:Osteostraci
540:Mericoceras
410:Erieopterus
284:Blakeoceras
279:Bembicosoma
217:Acanthopyge
162:(1 C, 11 P)
125:(2 C, 10 P)
23:during the
819:Categories
784:Wadeoceras
772:Venustulus
681:Pterygotus
631:Platyceras
616:Pentamerus
586:Pachytheca
562:Nostolepis
545:Meristella
508:Loganellia
503:Limuloides
469:Hostinella
454:Hederellid
437:Fusulinida
420:Euomphalus
405:Eospirifer
336:Coenitidae
212:Acanthodii
101:(2 C, 1 P)
48:See also:
693:Salopella
368:Diplopora
316:Camanchia
304:Bunodidae
237:Anglaspis
227:Acastella
703:Slimonia
646:Poraspis
257:Ariaspis
299:Bunodes
294:Bunaia
262:Atrypa
182:(21 P)
77:(24 P)
27:, the
138:(5 P)
19:that
821::
201:.
180:
160:
136:
123:
99:
75:
35:.
801:Z
779:W
767:V
725:T
688:S
581:P
569:O
557:N
525:M
493:L
476:K
444:H
432:F
400:E
358:D
311:C
269:B
207:A
171:W
147:P
110:L
86:G
66:E
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.