874:
and the most backward set of side lobes (L1) taken together, measured along the midline (or sagittally). L4 is also much wider than L0. Side lobes L2 and L3 do not merge with each other. The line between the backward tip of eye lobe and the junction of the back margin of lobe with glabella with the midline is 10-20°. L3 touches the eye ridge. L0 carries a node at the midline. The third thorax segment from the front (T3) is not larger than the neighboring segments and does not carry larger spines. Thoracic pleural furrows extend onto spines. Long backward directed spine on the midline of T15, and this spine is broad at its base.
873:
carries backwards directed spines at the corner between the halfcircle shaped frontal and side margin and the backmargin that is roughly perpendicular to the midline. The frontal lobe of the glabella (L4) is roughly 1½× the length of the backward ring-shaped lobe (also called occipital ring or L0)
865:
lacks dorsal sutures. Like all other members of the
Olenelloidea superfamily, the eye-ridges spring from the back of the frontal lobe (L4) of the central area of the cephalon, that is called
949:
1045:
524:
is an early species, close to the common ancestor of the genus. The rest of the species fall into two distinct groups. The first consists of the closely related
1104:
1032:
1114:
861:
has an almost flat exoskeleton, that is only thinly calcified, and has crescent-shaped eye ridges. As part of the
Olenellina suborder,
1099:
827:
783:
703:
681:
866:
501:
259:
923:
845:
823:
779:
761:
699:
677:
1000:
659:
1109:
1058:
1076:
964:
980:
113:
1063:
1050:
972:
793:
743:
726:
480:
224:
17:
968:
837:
815:
797:
771:
753:
736:
719:
691:
669:
652:
638:
610:
593:
467:
455:
247:
1093:
485:
72:
984:
805:
614:
184:
804:(430 feet above the basis of the Kane Formation, 6 miles Northwest of the head of
544:
near the basis of this group. The second group consisting of the closely related
622:
160:
47:
1023:
764:
of the Sekwi
Formation, 0.2 miles Southeast of June Lake, Mackenzie Mountains).
976:
172:
92:
57:
599:
588:
451:
447:
443:
416:
148:
136:
97:
41:
504:, a renowned early paleontologist, that described many trilobite species.
1017:
605:
463:
87:
82:
67:
62:
52:
34:
1037:
432:
233:
102:
77:
786:, Mackenzie Mountains, and the Illtyd Formation, Wernecke Mountains).
706:, Mackenzie Mountains, and the Illtyd Formation, Wernecke Mountains).
439:
124:
994:
1071:
580:
435:
950:"Cladistic Analysis of the Early Cambrian Olenelloid Trilobites"
998:
924:"Systematic Revision of the Olenelloidea (Trilobita, Cambrian)"
718:
was collected in
Northwestern Greenland, questionably from the
735:
651:
is found in Quebec, Canada and believed to be from the
662:
that has probably formed during the Lower
Ordovician).
1007:
844:of the Northwest Territories (type section of the
822:of the Northwest Territories (type section of the
778:of the Northwest Territories (type section of the
760:of the Northwest Territories (type section of the
698:of the Northwest Territories (type section of the
676:of the Northwest Territories (type section of the
931:Bulletin of the Peabody Museum of Natural History
917:
915:
913:
911:
909:
907:
905:
903:
901:
899:
897:
895:
893:
891:
889:
887:
645:of eastern New York State (Greenwich Formation).
826:of the Sekwi Formation, 0.2 miles Southeast of
782:of the Sekwi Formation, 0.2 miles Southeast of
702:of the Sekwi Formation, 0.2 miles Southeast of
680:of the Sekwi Formation, 0.2 miles Southeast of
8:
995:
796:, Canada, in what possibly belongs to the
24:
883:
742:(Wulff River Formation, Marshall Bugt,
725:(Wulff River Formation, Marshall Bugt,
621:, this clade is the sistergroup of the
560:slightly further removed, followed by
450:. It lived from the later part of the
568:near the basis of this second group.
7:
1077:DC11878B-3B45-FFCD-B1AF-3A07E6DE2169
572:Relationship within the Olenelloidea
37:(Upper Tommotian to Upper Botonian)
869:. The head shield (or cephalon) of
14:
1105:Extinct animals of North America
857:As with most early trilobites,
658:(limestone boulder found in a
1:
1115:Taxa named by Ebenezer Emmons
478:can easily be confused with
484:, a trilobite genus of the
438:from a well-known class of
33:Temporal range: late Lower
1131:
579:is the sistergroup of the
15:
977:10.1017/S0022336000024021
502:Charles Doolittle Walcott
239:
232:
114:Scientific classification
112:
27:
948:Lieberman, B.S. (1998).
922:Lieberman, B.S. (1999).
540:slightly less close and
16:Not to be confused with
957:Journal of Paleontology
848:of the Sekwi Formation.
830:, Mackenzie Mountains).
770:was excavated from the
690:was excavated from the
684:, Mackenzie Mountains).
520:According to Lieberman
458:Schmidtiellus mickwitzi
792:occurs on the eastern
500:was named in honor of
390:Olenellus praenuntius
1059:Paleobiology Database
836:was collected in the
637:was collected in the
402:Olenellus sequomalus
366:Olenellus paraoculus
1100:Cambrian trilobites
969:1998JPal...72...59L
585:Wanneria walcottana
414:Olenellus truemanni
378:Wanneria parvifrons
310:Kjerulfia lundgreni
278:Olenellus laxocules
752:is present in the
354:Wanneria mirabilis
326:Wanneria mediocris
306:Wanneria lundgreni
1087:
1086:
1001:Taxon identifiers
536:and twin species
513:Relations within
424:
423:
411:
399:
387:
375:
363:
347:
323:
303:
287:
275:
266:Callavia bicensis
263:
251:
1122:
1080:
1079:
1067:
1066:
1054:
1053:
1041:
1040:
1028:
1027:
1026:
996:
989:
988:
954:
945:
939:
938:
928:
919:
814:is found in the
794:Ellesmere Island
409:
397:
385:
373:
361:
350:Holmia mirabilis
345:
321:
314:Holmia lundgreni
301:
290:Olenellus logani
285:
273:
257:
245:
107:
44:
25:
1130:
1129:
1125:
1124:
1123:
1121:
1120:
1119:
1090:
1089:
1088:
1083:
1075:
1070:
1062:
1057:
1049:
1044:
1036:
1031:
1022:
1021:
1016:
1003:
993:
992:
952:
947:
946:
942:
926:
921:
920:
885:
880:
855:
744:Inglefield Land
727:Inglefield Land
631:
574:
518:
510:
494:
481:Ellipsocephalus
462:) to the upper
410:Lieberman, 1999
346:(Poulsen, 1958)
322:(Poulsen, 1958)
294:Wanneria logani
286:(Walcott, 1910)
228:
222:
221:
207:
197:
187:
175:
163:
151:
139:
127:
108:
106:
105:
100:
95:
90:
85:
80:
75:
70:
65:
60:
55:
50:
40:531–518.5
39:
38:
31:
21:
18:Ellipsocephalus
12:
11:
5:
1128:
1126:
1118:
1117:
1112:
1107:
1102:
1092:
1091:
1085:
1084:
1082:
1081:
1068:
1055:
1042:
1029:
1013:
1011:
1009:Elliptocephala
1005:
1004:
999:
991:
990:
940:
882:
881:
879:
876:
871:Ellipticephala
863:Elliptocephala
859:Elliptocephala
854:
851:
850:
849:
831:
809:
790:E. praenuntius
787:
765:
747:
730:
713:
707:
685:
668:occurs in the
663:
646:
630:
627:
619:Elliptocephala
611:Biceratopsinae
594:Fritzolenellus
577:Elliptocephala
573:
570:
538:E. praenuntius
517:
515:Elliptocephala
511:
509:
506:
493:
490:
476:Elliptocephala
428:Elliptocephala
422:
421:
420:
419:
404:
392:
383:E. praenuntius
380:
368:
356:
340:
316:
302:(Moberg, 1892)
296:
280:
268:
252:
246:Emmons, 1844 (
237:
236:
230:
229:
223:
218:Elliptocephala
215:
213:
209:
208:
205:
203:
199:
198:
195:
193:
189:
188:
183:
181:
177:
176:
171:
169:
165:
164:
159:
157:
153:
152:
147:
145:
141:
140:
135:
133:
129:
128:
123:
121:
117:
116:
110:
109:
101:
96:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
45:
32:
29:Elliptocephala
13:
10:
9:
6:
4:
3:
2:
1127:
1116:
1113:
1111:
1108:
1106:
1103:
1101:
1098:
1097:
1095:
1078:
1073:
1069:
1065:
1060:
1056:
1052:
1047:
1043:
1039:
1034:
1030:
1025:
1019:
1015:
1014:
1012:
1010:
1006:
1002:
997:
986:
982:
978:
974:
970:
966:
962:
958:
951:
944:
941:
936:
932:
925:
918:
916:
914:
912:
910:
908:
906:
904:
902:
900:
898:
896:
894:
892:
890:
888:
884:
877:
875:
872:
868:
864:
860:
852:
847:
843:
841:
835:
832:
829:
825:
821:
819:
813:
812:E. sequomalus
810:
807:
803:
801:
795:
791:
788:
785:
781:
777:
775:
769:
768:E. parvifrons
766:
763:
759:
757:
751:
750:E. paraoculus
748:
745:
741:
739:
734:
731:
728:
724:
722:
717:
714:
712:is present in
711:
708:
705:
701:
697:
695:
689:
686:
683:
679:
675:
673:
667:
664:
661:
657:
655:
650:
647:
644:
642:
636:
635:E. asaphoides
633:
632:
628:
626:
624:
620:
616:
612:
608:
607:
602:
601:
596:
595:
590:
586:
582:
578:
571:
569:
567:
563:
562:E. paraoculus
559:
558:E. parvifrons
555:
551:
547:
543:
539:
535:
531:
530:E. asaphoides
527:
523:
522:E. sequomalus
516:
512:
507:
505:
503:
499:
491:
489:
487:
486:Ptychopariida
483:
482:
477:
473:
471:
468:early middle
465:
461:
459:
453:
449:
445:
441:
437:
434:
430:
429:
418:
415:
408:
405:
403:
398:(Fritz, 1972)
396:
395:E. sequomalus
393:
391:
386:(Cowie, 1968)
384:
381:
379:
374:(Fritz, 1972)
372:
371:E. parvifrons
369:
367:
362:(Fritz, 1972)
360:
359:E. paraoculus
357:
355:
351:
344:
341:
339:
335:
331:
327:
320:
317:
315:
311:
307:
300:
297:
295:
291:
284:
281:
279:
274:(Fritz, 1972)
272:
269:
267:
261:
256:
253:
249:
244:
243:E. asaphoides
241:
240:
238:
235:
231:
226:
220:
219:
214:
211:
210:
206:“Wanneriinae”
204:
201:
200:
196:“Wanneriidae”
194:
191:
190:
186:
182:
180:Superfamily:
179:
178:
174:
170:
167:
166:
162:
158:
155:
154:
150:
146:
143:
142:
138:
134:
131:
130:
126:
122:
119:
118:
115:
111:
104:
99:
94:
89:
84:
79:
74:
69:
64:
59:
54:
49:
43:
36:
30:
26:
23:
19:
1110:Olenelloidea
1008:
963:(1): 59–78.
960:
956:
943:
934:
930:
870:
862:
858:
856:
846:type section
839:
833:
824:type section
817:
811:
806:Scoresby Bay
799:
789:
780:type section
773:
767:
762:type section
755:
749:
737:
733:E. mirabilis
732:
720:
716:E. mediocris
715:
710:E. lundgreni
709:
700:type section
693:
687:
678:type section
671:
666:E. laxocules
665:
660:conglomerate
653:
648:
640:
634:
629:Distribution
618:
617:. Including
615:Bristoliinae
604:
598:
592:
584:
576:
575:
566:E. laxocules
565:
561:
557:
553:
550:E. lundgreni
549:
546:E. mirabilis
545:
542:E. mediocris
541:
537:
533:
529:
525:
521:
519:
514:
497:
496:The species
495:
479:
475:
469:
457:
427:
426:
425:
413:
406:
401:
394:
389:
382:
377:
370:
365:
358:
353:
349:
343:E. mirabilis
342:
338:W. troelseni
337:
334:W. subglabra
333:
329:
325:
319:E. mediocris
318:
313:
309:
305:
299:E. lundgreni
298:
293:
289:
282:
277:
271:E. laxocules
270:
265:
254:
242:
217:
216:
185:Olenelloidea
28:
22:
853:Description
834:E. walcotti
649:E. bicensis
623:Olenellidae
583:comprising
534:E. walcotti
526:E. bicensis
498:E. walcotti
407:E. walcotti
330:W. ruginosa
255:E. bicensis
202:Subfamily:
161:Redlichiida
1094:Categories
878:References
448:trilobites
444:arthropods
173:Olenellina
168:Suborder:
137:Arthropoda
840:Olenellus
828:June Lake
818:Olenellus
800:Olenellus
784:June Lake
774:Olenellus
756:Olenellus
738:Olenellus
721:Olenellus
704:June Lake
694:Olenellus
688:E. logani
682:June Lake
672:Olenellus
654:Olenellus
641:Olenellus
600:Mummaspis
589:Holmiidae
554:E. logani
492:Etymology
470:Olenellus
452:Tommotian
417:pro parte
348:synonyms
324:synonyms
304:synonyms
288:synonyms
283:E. logani
149:Trilobita
120:Kingdom:
1024:Q5365812
1018:Wikidata
985:86307339
867:glabella
613:and the
606:Laudonia
508:Taxonomy
464:Botomian
412:synonym
400:synonym
388:synonym
376:synonym
364:synonym
276:synonym
264:synonym
192:Family:
132:Phylum:
125:Animalia
35:Cambrian
1051:1069597
1038:4638679
965:Bibcode
838:Middle
816:Middle
772:Middle
754:Middle
692:Middle
670:Middle
639:Middle
552:, with
532:, with
488:order.
442:marine
433:extinct
262:, 1910)
260:Walcott
234:Species
212:Genus:
156:Order:
144:Class:
983:
798:Lower
609:, the
587:, the
564:, and
456:upper
446:, the
440:fossil
431:is an
227:, 1844
225:Emmons
1072:Plazi
1064:19125
1046:IRMNG
981:S2CID
953:(PDF)
927:(PDF)
842:-zone
820:-zone
802:-zone
776:-zone
758:-zone
740:-zone
723:-zone
696:-zone
674:-zone
656:-zone
643:-zone
581:clade
472:-zone
460:-zone
436:genus
1033:GBIF
556:and
548:and
528:and
248:Type
48:Preęž’
973:doi
474:).
1096::
1074::
1061::
1048::
1035::
1020::
979:.
971:.
961:72
959:.
955:.
935:45
933:.
929:.
886:^
808:).
746:).
729:).
625:.
603:,
597:,
591:,
352:,
336:,
332:,
328:,
312:,
308:,
292:,
98:Pg
42:Ma
987:.
975::
967::
937:.
466:(
454:(
258:(
250:)
103:N
93:K
88:J
83:T
78:P
73:C
68:D
63:S
58:O
53:ęž’
20:.
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