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135:
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488:
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1757:
1590:. Memoirs of the Geological Society of London. Vol. 38. Geological Society of London. p. 490.
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1858:
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1103:
1063:
478:
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1363:
1073:
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301:
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953:
763:
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279:
240:
130:
110:
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508:
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1083:
983:
678:
558:
1744:
1679:
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1443:
1423:
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1383:
1313:
1293:
1283:
1263:
1213:
1023:
943:
733:
548:
115:
1749:
1736:
1670:
1526:(Pilekiinae, Trilobita) from the Fezouata Shale and the early diversification of Cheiruridae"
1183:
568:
1582:
J.M. Adrian (2014). "20. A synopsis of
Ordovician trilobite distribution and diversity". In
1537:
813:
743:
753:
713:
1809:
1333:
119:
1852:
1583:
1551:
1323:
923:
903:
863:
723:
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59:
1113:
1053:
893:
803:
773:
648:
618:
608:
498:
442:
427:
391:
1684:
1718:
1664:
1353:
833:
628:
588:
450:
433:
with 67 species in 13 genera are known between the Floian and upper Katian. The
34:
1655:
993:
883:
793:
693:
638:
438:
403:
383:
347:
206:
79:
44:
1805:
973:
913:
843:
688:
454:
446:
419:
414:, enveloping 22 species in 5 genera, of which the monophyly is unclear. The
359:
343:
193:
180:
167:
147:
84:
1542:
1521:
1615:
1649:
1003:
853:
823:
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461:
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367:
363:
355:
351:
340:
74:
69:
54:
49:
39:
1710:
1013:
783:
354:
modified into finger-like spines. They first appeared in the uppermost
89:
64:
1723:
350:. Its members, as with other members of the suborder, had distinctive
411:
399:
387:
157:
123:
1626:
1770:
933:
371:
1697:
437:
are a small monophyletic group with 13 species in 2 genera. The
1630:
1520:
F. Perez-Peris, L. Laibl, M. Vidal, A. Daley (November 2021).
1813:
426:, having 71 species assigned to 6 genera. The possibly
398:
are also probably monophyletic, and are known from the
1459:
1449:
1439:
1429:
1419:
1409:
1399:
1389:
1379:
1369:
1359:
1349:
1339:
1329:
1319:
1309:
1299:
1289:
1279:
1269:
1259:
1249:
1239:
1229:
1219:
1209:
1199:
1189:
1179:
1169:
1159:
1149:
1139:
1129:
1119:
1109:
1099:
1089:
1079:
1069:
1059:
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1039:
1029:
1019:
1009:
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989:
979:
969:
959:
949:
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859:
849:
839:
829:
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729:
719:
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584:
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494:
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320:
309:
298:
287:
276:
262:
248:
237:
1639:
441:are the earliest subfamily and therefore certainly
1588:Early Palaeozoic Biogeography and Palaeogeography
453:with 56 known species assigned to 19 genera. The
1577:
1575:
410:were present between the Floian and the Upper
370:). Currently about 657 species assigned to 99
1833:
386:with 269 species in 38 genera occur from the
362:), and persisted until the end of the Middle
8:
1564:: CS1 maint: multiple names: authors list (
1522:"Systematics, morphology, and appendages of
1515:
1513:
1511:
1509:
1507:
1505:
1503:
1501:
460:has about 50 species between the Floian and
1899:Paleozoic life of Newfoundland and Labrador
1499:
1497:
1495:
1493:
1491:
1489:
1487:
1485:
1483:
1481:
1840:
1826:
1627:
418:are probably monophyletic, occur from the
100:
20:
1541:
1477:
1557:
394:. The 109 species in 15 genera of the
7:
1794:
1792:
1776:FB558783-F674-8D02-FF13-9979FC42FA7D
14:
390:to the Givetian and are probably
1796:
1614:
134:
1:
1530:Acta Palaeontologica Polonica
1812:. You can help Knowledge by
16:Extinct family of trilobites
1889:Furongian first appearances
1920:
1791:
449:and going extinct in the
445:, occurring in the upper
234:
229:
131:Scientific classification
129:
108:
99:
23:
244:Hawle & Corda, 1847
224:Hawle & Corda, 1847
1808:-related article is a
1543:10.4202/app.00902.2021
1874:Ordovician trilobites
1758:Paleobiology Database
1586:; T. Servais (eds.).
1894:Givetian extinctions
1623:at Wikimedia Commons
1884:Devonian trilobites
1879:Silurian trilobites
1869:Cambrian trilobites
1254:Pseudosphaerexochus
1864:Trilobite families
111:Paraceraurus exsul
30:Furongian–Givetian
1821:
1820:
1786:
1785:
1745:Open Tree of Life
1633:Taxon identifiers
1619:Media related to
1134:Parasphaerexochus
734:Crotalocephalides
539:Arcticeraurinella
396:Acanthoparyphinae
334:
333:
328:
317:
306:
295:
284:
273:
259:
258:& Evitt, 1954
245:
225:
116:Middle Ordovician
1911:
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1341:
1331:
1321:
1311:
1301:
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1224:Protocerauroides
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1171:
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941:
931:
921:
911:
901:
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881:
871:
861:
851:
841:
831:
821:
814:Eccoptochiloides
811:
801:
791:
781:
771:
761:
751:
744:Crotalocephalina
741:
731:
721:
711:
701:
686:
676:
666:
656:
646:
636:
626:
616:
606:
596:
586:
576:
566:
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486:
476:
346:of the suborder
326:
322:
315:
311:
304:
300:
293:
289:
282:
278:
268:
264:
254:
252:Acantoparyphinae
250:
243:
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223:
218:
205:
192:
179:
139:
138:
104:
94:
31:
27:Temporal range:
21:
1919:
1918:
1914:
1913:
1912:
1910:
1909:
1908:
1904:Phacopida stubs
1849:
1848:
1847:
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1787:
1782:
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1769:
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1756:
1748:
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1722:
1717:
1709:
1704:
1696:
1691:
1683:
1678:
1669:
1668:
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1654:
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1648:
1635:
1611:
1606:
1605:
1598:
1581:
1580:
1573:
1556:
1519:
1518:
1479:
1474:
1469:
1304:Sinoparapilekia
1234:Pseudocheirurus
754:Crotalocephalus
714:Contracheirurus
579:Barrandeopeltis
470:
458:Sphaerexochinae
431:Eccoptochilinae
380:
339:is a family of
324:Sphaerexochinae
291:Eccoptochilinae
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216:
203:
190:
177:
133:
95:
93:
92:
87:
82:
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67:
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1609:External links
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1597:978-1862393738
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1344:Stubblefieldia
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1334:Sphaerocoryphe
1327:
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1307:
1297:
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1244:Pseudopliomera
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1104:Pandaspinapyga
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1064:Metapliomerops
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479:Acanthoparypha
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408:Cyrtometopinae
382:The subfamily
379:
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374:are included.
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266:Cyrtometopinae
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1584:D.A.T. Harper
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1438:
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1428:
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1416:
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1414:Whittakerites
1408:
1406:
1405:
1398:
1396:
1395:
1388:
1386:
1385:
1378:
1376:
1375:
1368:
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1356:
1355:
1348:
1346:
1345:
1338:
1336:
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1328:
1326:
1325:
1324:Sphaerexochus
1318:
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1175:
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1128:
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1125:
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1038:
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1015:
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988:
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968:
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958:
956:
955:
948:
946:
945:
938:
936:
935:
928:
926:
925:
924:Heliomeroides
918:
916:
915:
908:
906:
905:
904:Hapsiceraurus
898:
896:
895:
888:
886:
885:
878:
876:
875:
874:Geracephalina
868:
866:
865:
864:Gabriceraurus
858:
856:
855:
848:
846:
845:
838:
836:
835:
828:
826:
825:
818:
816:
815:
808:
806:
805:
798:
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795:
788:
786:
785:
778:
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768:
766:
765:
758:
756:
755:
748:
746:
745:
738:
736:
735:
728:
726:
725:
724:Courtessolium
718:
716:
715:
708:
706:
705:
698:
695:
691:
690:
683:
681:
680:
673:
671:
670:
663:
661:
660:
659:Cerauropeltis
653:
651:
650:
643:
641:
640:
633:
631:
630:
623:
621:
620:
613:
611:
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603:
601:
600:
599:Bornholmaspis
593:
591:
590:
583:
581:
580:
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571:
570:
563:
561:
560:
553:
551:
550:
543:
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401:
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283:Raimond, 1913
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103:
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91:
86:
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71:
66:
61:
56:
51:
46:
41:
36:
22:
19:
1814:expanding it
1803:
1788:
1640:
1587:
1560:cite journal
1533:
1529:
1524:Anacheirurus
1523:
1464:Zazvorkaspis
1462:
1452:
1442:
1432:
1422:
1412:
1404:Victorispina
1402:
1392:
1382:
1374:Tienshihfuia
1372:
1364:Tesselacauda
1362:
1352:
1342:
1332:
1322:
1312:
1302:
1292:
1282:
1272:
1262:
1252:
1242:
1232:
1222:
1212:
1202:
1192:
1182:
1172:
1162:
1152:
1142:
1132:
1122:
1114:Paraceraurus
1112:
1102:
1092:
1082:
1074:Nieszkowskia
1072:
1062:
1054:Macrogrammus
1052:
1044:Leviceraurus
1042:
1032:
1022:
1012:
1002:
992:
982:
972:
962:
952:
942:
932:
922:
912:
902:
894:Hammannopyge
892:
882:
872:
862:
852:
842:
832:
822:
812:
804:Eccoptochile
802:
792:
782:
774:Cyrtometopus
772:
762:
752:
742:
732:
722:
712:
702:
687:
677:
667:
657:
649:Cerauromeros
647:
637:
627:
619:Ceraurinella
617:
609:Bufoceraurus
607:
597:
587:
577:
567:
557:
547:
537:
529:Apollonaspis
527:
519:Ancyginaspis
517:
507:
499:Anacheirurus
497:
489:Actinopeltis
487:
477:
443:paraphyletic
435:Heliomerinae
428:paraphyletic
392:monophyletic
381:
378:Distribution
336:
335:
302:Heliomerinae
230:Subfamilies
219:
109:
18:
1859:Cheiruridae
1719:iNaturalist
1671:Cheiruridae
1665:Wikispecies
1641:Cheiruridae
1621:Cheiruridae
1434:Xystocrania
1354:Sycophantia
1274:Ratinkaspis
1194:Placoparina
1144:Parayoungia
1124:Parapilekia
954:Junggarella
834:Eocheirurus
764:Cybelloides
629:Ceraurinium
589:Borealaspis
451:Darriwilian
416:Deiphoninae
337:Cheiruridae
316:Sdzuy, 1955
305:Evitt, 1951
280:Deiphoninae
241:Cheirurinae
220:Cheiruridae
24:Cheiruridae
1853:Categories
1472:References
1174:Patomaspis
1164:Pateraspis
994:Krattaspis
884:Hadromeros
794:Didrepanon
694:type genus
639:Ceraurinus
509:Anasobella
439:Pilekiinae
404:Ludfordian
384:Cheirurina
348:Cheirurina
344:trilobites
327:Öpik, 1937
313:Pilekiinae
294:Lane, 1971
256:Wittington
207:Cheirurina
200:Suborder:
168:Arthropoda
1806:Phacopida
1552:244734312
1204:Pompeckia
1094:Osekaspis
1084:Onycopyge
984:Koraipsis
974:Kolymella
914:Heliomera
844:Forteyops
689:Cheirurus
679:Chashania
559:Areiaspis
455:monotypic
447:Furongian
420:Dapingian
360:Furongian
194:Phacopida
181:Trilobita
154:Kingdom:
148:Eukaryota
1656:Q5089717
1650:Wikidata
1444:Yinaspis
1424:Xylabion
1394:Valongia
1384:Turantyx
1314:Skelipyx
1294:Seisonia
1284:Reraspis
1264:Radiurus
1214:Proromma
1024:Laneites
1004:Ktenoura
944:Hyrokybe
854:Foulonia
824:Emsurina
704:Chiozoon
669:Ceraurus
424:Gorstian
368:Givetian
364:Devonian
356:Cambrian
352:pygidial
341:phacopid
213:Family:
164:Phylum:
158:Animalia
144:Domain:
122:region,
1750:5128713
1711:3266812
1698:4322446
1454:Youngia
1184:Pilekia
1014:Landyia
784:Deiphon
569:Azyptyx
462:Přídolí
422:to the
402:to the
358:(upper
187:Order:
174:Class:
1737:116516
1724:638007
1594:
1550:
964:Kawina
468:Genera
412:Katian
406:. The
400:Floian
388:Floian
372:genera
272:, 1937
124:Russia
1804:This
1771:Plazi
1763:85334
1732:IRMNG
1548:S2CID
1034:Lehua
934:Holia
549:Areia
1810:stub
1706:GBIF
1592:ISBN
1566:link
270:Öpik
35:PreꞒ
1693:EoL
1685:837
1680:CoL
1538:doi
1855::
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1574:^
1562:}}
1558:{{
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464:.
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114:,
85:Pg
1841:e
1834:t
1827:v
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90:N
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55:D
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45:O
40:Ꞓ
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