301:
951:
151:
111:
129:
325:
is one of North
America's largest trilobites, reaching over 20 cm (7.9 in) in length. It had a thorax composed of 13 segments with weak trilobation, a large subtriangular head terminating in an expanded rostral plate, a two-pronged
808:
Sandford, Andrew C. (2005). "Homalonotid trilobites from the
Silurian and Lower Devonian of south-eastern Australia and New Zealand (Arthropoda: Trilobita: Homalonotidae)".
342:
and the shovel-like anterior of the head suggests a burrowing lifestyle, and an exoskeleton marked with many small pores which, in life, probably housed hair-like
370:
to better categorize distinct populations. A number of species previously assigned to other genera were included, and a number of species previously assigned to
992:
788:"Observations on burrowing behavior in Limulus polyphemus (Chelicerata, Merostomata), with implications on the functional anatomy of trilobites"
514:. Named after E. D. Gill, for his contributions to Australian paleontology, including naming a number of Homalonotid trilobites.
308:, missing some of the anterior portion. Collected from the Rochester Shale in Canada. Pores for setae are visible marginally.
406:. The following list is therefore provisional, and other sources may differ. A handful of species also remain undescribed.
985:
150:
1016:
787:
978:
1011:
891:
923:
327:
262:
300:
950:
122:
from the
Rochester Shale of North America, housed at the Oxford University Natural History Museum.
145:
402:
928:
848:
346:
in life, allowed the trilobite to feel which portions of its body were covered with sediment.
962:
868:"The trilobite subfamily Homalonotinae from the Upper Silurian and Lower Devonian of Poland"
817:
128:
20:
600:
This group is known only from the
Silurian. Named for Otis Rami, the son of the author.
110:
1005:
867:
420:
318:
221:
68:
431:
424:
396:
339:
914:
359:
43:
335:
88:
53:
852:
821:
958:
355:
331:
208:
195:
182:
162:
93:
837:"Molting and Description of a New Homalonotid Trilobite from Pennsylvania"
908:
511:
416:
376:
367:
83:
78:
63:
58:
48:
836:
390:
98:
73:
172:
885:
299:
343:
889:
712:
The following species have not been assigned to a subgenus.
374:
were excluded, variously reassigned to the trilobite genera
510:
This group is known from the Late
Silurian to the Early
966:
760:
749:
738:
727:
716:
697:
685:
673:
661:
645:
633:
617:
605:
579:
567:
555:
543:
531:
519:
489:
478:
467:
455:
443:
898:
354:In his description of new Homalonotid species from
317:is an extinct genus of trilobite in the family
304:An isolated fossil cephalon from the trilobite
986:
574:Benedetto and Martel (in Baldis et al., 1976)
496:Benedetto and Martel (in Baldis et al., 1976)
334:. It is known from all continents except for
8:
835:Busch, Richard M.; Swartz, Frank M. (1985).
140:from the Rochester Shale of North America.
993:
979:
886:
803:
801:
127:
109:
27:
778:
7:
947:
945:
435:Trimerus (Trimerus) delphinocephalus
384:has been frequently included within
306:Trimerus (Trimerus) delphinocephalus
138:Trimerus (Trimerus) delphinocephalus
120:Trimerus (Trimerus) delphinocephalus
965:. You can help Knowledge (XXG) by
415:This group is known only from the
14:
949:
624:Tomczykowa, 1978 (nom. nov. for
149:
654:Homalonotus (Koenigia) ludensis
1:
872:Acta Palaeontologica Polonica
723:Tromelin and Lebesconte, 1856
19:For the Italian islands, see
652:Morris, 1988 (nom. nov. for
16:Extinct genus of trilobites
1033:
944:
810:Memoirs of Museum Victoria
523:T. (Edgillia) kinglakensis
362:, Andrew Sandford divided
18:
792:American Museum Novitates
701:T. (Ramiotis) tomczykowae
459:T. (Trimerus) cylindricus
291:
286:
275:Trimerus delphinocephalus
268:
261:
146:Scientific classification
144:
135:
126:
117:
108:
30:
866:Tomczykowa, Ewa (1975).
822:10.24199/j.mmv.2005.62.1
786:Eldredge, Niles (1970).
559:T. (Edgillia) mongolicus
254:T. delphinocephalus
841:Journal of Paleontology
756:Ohern and Maynard, 1913
609:T. (Ramiotis) rickardsi
493:T. (Trimerus) flexuosus
471:T. (Trimerus) harrisoni
961:-related article is a
767:Busch and Swartz, 1985
621:T. (Ramiotis) permutus
535:T. (Edgillia) vanuxemi
447:T. (Trimerus) johannis
366:species into multiple
309:
924:Paleobiology Database
689:T. (Ramiotis) thomasi
649:T. (Ramiotis) salteri
637:T. (Ramiotis) dyaulax
571:T. (Edgillia) grandis
303:
39:Llandovery–Lochkovian
547:T. (Edgillia?) major
677:T. (Ramiotis) otisi
596:Trimerus (Ramiotis)
583:T. (Edgillia) jelli
506:Trimerus (Edgillia)
482:T. (Trimerus) vomer
411:Trimerus (Trimerus)
330:, and a triangular
665:T. (Ramiotis) iani
562:Tchernycheva, 1937
440:(USA, Canada, UK)
310:
136:Reconstruction of
974:
973:
939:
938:
892:Taxon identifiers
768:
757:
746:
735:
724:
705:
693:
681:
669:
657:
641:
629:
628:Tomczykowa, 1975)
613:
587:
575:
563:
551:
539:
527:
497:
486:
475:
463:
451:
439:
298:
297:
242:
1024:
995:
988:
981:
953:
946:
932:
931:
919:
918:
917:
887:
880:
879:
863:
857:
856:
847:(5): 1062–1074.
832:
826:
825:
805:
796:
795:
783:
766:
762:
755:
751:
744:
740:
733:
729:
722:
718:
703:
699:
691:
687:
679:
675:
667:
663:
651:
647:
639:
635:
623:
619:
611:
607:
585:
581:
573:
569:
561:
557:
549:
545:
537:
533:
525:
521:
495:
491:
484:
480:
473:
469:
461:
457:
449:
445:
437:
277:
273:
240:
233:
220:
207:
194:
154:
153:
131:
113:
103:
40:
36:Temporal range:
28:
1032:
1031:
1027:
1026:
1025:
1023:
1022:
1021:
1017:Phacopida stubs
1002:
1001:
1000:
999:
942:
940:
935:
927:
922:
913:
912:
907:
894:
884:
883:
865:
864:
860:
834:
833:
829:
807:
806:
799:
785:
784:
780:
775:
764:T. stelmophorus
599:
550:Whitfield, 1885
509:
414:
382:Dipleura dekayi
352:
282:
279:
271:
270:
257:
239:
231:
218:
205:
192:
148:
104:
102:
101:
96:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
38:
37:
34:
24:
21:Tremiti Islands
17:
12:
11:
5:
1030:
1028:
1020:
1019:
1014:
1004:
1003:
998:
997:
990:
983:
975:
972:
971:
954:
937:
936:
934:
933:
920:
904:
902:
896:
895:
890:
882:
881:
858:
827:
797:
777:
776:
774:
771:
770:
769:
758:
747:
736:
725:
720:T.? acuminatus
710:
709:
708:
707:
704:Sandford, 2005
695:
692:Sandford, 2005
683:
680:Sandford, 2005
671:
668:Sandford, 2005
659:
643:
642:(Saudi Arabia)
631:
612:Sandford, 2005
592:
591:
590:
589:
586:Sandford, 2005
577:
565:
553:
541:
502:
501:
500:
499:
487:
476:
465:
453:
351:
348:
296:
295:
289:
288:
287:Other species
284:
283:
280:
266:
265:
259:
258:
250:
248:
244:
243:
229:
225:
224:
216:
212:
211:
203:
199:
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190:
186:
185:
180:
176:
175:
170:
166:
165:
160:
156:
155:
142:
141:
133:
132:
124:
123:
115:
114:
106:
105:
97:
92:
87:
82:
77:
72:
67:
62:
57:
52:
47:
42:
41:
35:
15:
13:
10:
9:
6:
4:
3:
2:
1029:
1018:
1015:
1013:
1012:Homalonotidae
1010:
1009:
1007:
996:
991:
989:
984:
982:
977:
976:
970:
968:
964:
960:
955:
952:
948:
943:
930:
925:
921:
916:
910:
906:
905:
903:
901:
897:
893:
888:
877:
873:
869:
862:
859:
854:
850:
846:
842:
838:
831:
828:
823:
819:
815:
811:
804:
802:
798:
793:
789:
782:
779:
772:
765:
759:
754:
748:
743:
742:T. perceensis
737:
734:Barrois, 1886
732:
726:
721:
715:
714:
713:
702:
696:
690:
684:
678:
672:
666:
660:
656:Salter, 1865)
655:
650:
644:
638:
632:
627:
622:
616:
615:
610:
604:Type species
603:
602:
601:
598:
597:
584:
578:
572:
566:
560:
554:
548:
542:
536:
530:
529:
524:
518:Type species
517:
516:
515:
513:
508:
507:
494:
488:
485:Chapman, 1912
483:
477:
472:
466:
460:
454:
448:
442:
441:
436:
433:
430:
429:
428:
426:
422:
418:
413:
412:
407:
405:
404:
399:
398:
393:
392:
387:
383:
379:
378:
373:
369:
365:
361:
357:
349:
347:
345:
344:sensory setae
341:
340:compound eyes
337:
333:
329:
324:
320:
319:Homalonotidae
316:
315:
307:
302:
294:
290:
285:
278:
276:
267:
264:
263:Binomial name
260:
256:
255:
249:
246:
245:
238:
237:
230:
227:
226:
223:
222:Homalonotidae
217:
214:
213:
210:
204:
201:
200:
197:
191:
188:
187:
184:
181:
178:
177:
174:
171:
168:
167:
164:
161:
158:
157:
152:
147:
143:
139:
134:
130:
125:
121:
116:
112:
107:
100:
95:
90:
85:
80:
75:
70:
65:
60:
55:
50:
45:
33:
29:
26:
22:
967:expanding it
956:
941:
899:
875:
871:
861:
844:
840:
830:
813:
809:
791:
781:
763:
752:
745:Clarke, 1913
741:
730:
719:
711:
700:
688:
676:
664:
653:
648:
640:Thomas, 1977
636:
625:
620:
614:(Australia)
608:
595:
594:
593:
582:
570:
558:
546:
534:
528:(Australia)
522:
505:
504:
503:
492:
481:
470:
462:Salter, 1865
458:
450:Salter, 1865
446:
434:
432:Type species
410:
409:
408:
401:
397:Burmeisteria
395:
389:
385:
381:
375:
371:
363:
353:
322:
313:
312:
311:
305:
292:
274:
269:
253:
252:
235:
234:
137:
119:
31:
25:
816:(1): 1–66.
706:(Australia)
694:(Australia)
682:(Australia)
670:(Australia)
588:(Australia)
576:(Argentina)
498:(Argentina)
474:McCoy, 1876
438:Green, 1832
360:New Zealand
338:. Its tiny
281:Green, 1832
241:Green, 1832
1006:Categories
878:(1): 3–46.
773:References
753:T. swartzi
731:T.? lehiri
626:T. lobatus
564:(Mongolia)
538:Hall, 1859
526:Gill, 1949
403:Wenndorfia
336:Antarctica
183:Arthropoda
118:Fossil of
959:Phacopida
915:Q41158953
853:0022-3360
368:subgenera
356:Australia
328:hypostome
293:See text
247:Species:
209:Phacopida
196:Trilobita
169:Kingdom:
163:Eukaryota
909:Wikidata
900:Trimerus
630:(Poland)
512:Devonian
417:Silurian
386:Trimerus
377:Dipleura
372:Trimerus
364:Trimerus
332:pygidium
323:Trimerus
314:Trimerus
236:Trimerus
215:Family:
179:Phylum:
173:Animalia
159:Domain:
32:Trimerus
794:(2436).
421:Wenlock
391:Digonus
350:Species
272:†
251:†
228:Genus:
202:Order:
189:Class:
851:
425:Ludlow
400:, and
957:This
929:21805
552:(USA)
540:(USA)
963:stub
849:ISSN
658:(UK)
464:(UK)
452:(UK)
358:and
44:PreꞒ
818:doi
427:).
423:to
388:),
1008::
926::
911::
876:20
874:.
870:.
845:59
843:.
839:.
814:62
812:.
800:^
790:.
394:,
321:.
94:Pg
994:e
987:t
980:v
969:.
855:.
824:.
820::
761:†
750:†
739:†
728:†
717:†
698:†
686:†
674:†
662:†
646:†
634:†
618:†
606:†
580:†
568:†
556:†
544:†
532:†
520:†
490:†
479:†
468:†
456:†
444:†
419:(
380:(
232:†
219:†
206:†
193:†
99:N
89:K
84:J
79:T
74:P
69:C
64:D
59:S
54:O
49:Ꞓ
23:.
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