255:
food-processing unit, the pleon plus tailfan, the walking-appendage area, and the sensorial unit. They differ from typical hoplocarids by having their carapace covering the entire thorax and the unspecialized thoracopods acting as natatory appendages Like the Mantis Shrimp, their eyes are stalked and elevated on the anterior cephalon. Unlike
Stomatopods, their functional morphology is poorly understood. This limited understanding of their morphology and the presence of damaged fossils makes them much more difficult to not only identify, but to specify species as well.
46:
359:
Aeschronectids are particularly hard to identify due to their fossils being damaged or half-digested. A preserved structure of a tail fan and attached abdomens are generally used to distinguish
Aeschronectids from their modern counterparts. Due to the damage many fossils have sustained, many of them
443:
Hyzny, Matus & Hoch, Ivan & Schram, Frederick & Rybár, Samuel. (2014). Crangopsis Salter, 1863 from the Lower
Carboniferous (Mississippian) of the Ostrava Formation - the first record of Aeschronectida (Malacostraca: Hoplocarida) from continental Europe. Bulletin of Geosciences. 89.
254:
have typical characteristics of hoplocarids including 3-flagellate first antenna, an enlarged abdomen, a shortened thorax, 3-segmented thoracic protopods, cephalic kinesis, pleopodal epipodite gills, and an articulated rostrum. The bodies of
Aeschronectids are divided into four tagmata: the
688:
Smith, C. P., Aubier, P. A. U. L., Charbonnier, S. Y. L. V. A. I. N., Laville, T. H. O. M. A. S., Olivier, N. I. C. O. L. A. S., Escarguel, G. I. L. L. E. S., ... & Brayard, A. (2023). Closing a major gap in mantis shrimp evolution-first fossils of
Stomatopoda from the Triassic.
364:
and not distinguished to a singular species of genus. Many studies involving
Aeschronectids generally try and distinguish new families and Genera or try and connect them as potential predecessors to Stomatopoda.
630:
1067:
239:
morphology by having more unmodified thoracopods. It's theorized that these thoracopods evolved to become more specialized, making them potential ancestors to
1123:
725:
1118:
672:
Schram, F. R. (1984). Upper
Pennsylvanian Arthropods from Black Shales of Iowa and Nebraska. Journal of Paleontology, 58(1), 197–209.
387:"Palaeo- and archaeostomatopods (Hoplocarida: Crustacea) from the Bear Gulch Limestone, Mississippian (Namurian), of central Montana"
1108:
419:
Schram, F. R., & Schram, J. M. (1979). Some Shrimp of the Madera
Formation (Pennsylvanian) Manzanita Mountains, New Mexico.
219:, or the age of amphibians. They have been found mostly in the U.S. and in the British Isles, in 1979 species were found in the
45:
1113:
718:
391:
651:
Some Middle
Pennsylvanian Hoplocarida (Crustacea) and their phylogenetic significance / Frederick R. Schram --
227:
was first identified appearing in
Continental Europe in around 2014. While sharing similar characteristics to
514:
1020:
1080:
821:
711:
864:
1058:
927:
778:
784:
673:
428:
40:
1085:
940:
580:
534:
495:
477:
456:"Evolution of mantis shrimps (Stomatopoda, Malacostraca) in the light of new Mesozoic fossils"
212:
560:
1072:
882:
655:
607:
572:
526:
485:
467:
400:
281:
131:
115:
628:
sp. nov. (Crustacea: Malacostraca) from the Mississippian Heath Shale of central Montana".
454:
Haug, Joachim T; Haug, Carolin; Maas, Andreas; Kutschera, Verena; Waloszek, Dieter (2010).
969:
887:
200:
611:
600:"'Aeschronectida', Evolution and Phylogeny of Pancrustacea: A Story of Scientific Method"
599:
836:
490:
455:
177:
154:
1102:
892:
858:
826:
240:
228:
216:
204:
905:
769:
735:
341:
321:
286:
264:
220:
185:
162:
139:
87:
231:, they lack certain physical characteristics of that taxon. The first species of
1052:
853:
806:
795:
789:
270:
236:
97:
1043:
945:
915:
874:
759:
530:
405:
386:
331:
235:
is accredited to Frederick R. Schram. They diverge substantially from typical
208:
169:
17:
584:
538:
481:
472:
921:
845:
753:
649:
576:
303:
146:
77:
57:
659:
499:
1037:
979:
960:
910:
703:
950:
933:
677:
432:
898:
747:
67:
1014:
974:
513:
Hof, Cees H. J.; Schram, Frederick R.; Watling, Les (2000-07-20).
385:
Jenner, Ronald A.; Hof, Cees H. J.; Schram, Frederick R. (1998).
215:
subperiod in what is now Montana. They exclusively lived in the
1018:
707:
515:"The Place of the Hoplocarida in the Malacostracan Pantheon"
598:
Schram, Frederick R.; Koenemann, Stefan (20 January 2022).
631:
Transactions of the San Diego Society of Natural History
1027:
959:
873:
844:
835:
805:
768:
648:Schram, Frederick R.; Schram, Frederick R. (1969).
624:Joan M. Schram & Frederick R. Schram (1979). "
983:(shrimp, prawns, crayfish, lobsters, crabs, etc.)
1000:The three most speciose orders are marked in
719:
554:
552:
550:
548:
8:
654:. Chicago: Field Museum of Natural History.
1015:
841:
726:
712:
704:
31:
489:
471:
404:
380:
378:
374:
7:
1004:; obelisks (†) mark extinct orders.
612:10.1093/oso/9780195365764.003.0022
561:"Polyphyly in the Eumalacostraca?"
444:707-717. 10.3140/bull.geosci.1458.
25:
360:are identified as being part of
44:
1124:Mississippian first appearances
1:
559:Schram, Frederick R. (1969).
519:Journal of Crustacean Biology
1119:Prehistoric arthropod orders
27:Extinct order of crustaceans
827:Stomatopoda (mantis shrimp)
1140:
995:
742:
531:10.1163/1937240X-90000002
406:10.1163/18759866-06703001
128:
123:
41:Scientific classification
39:
34:
1109:Prehistoric Malacostraca
473:10.1186/1471-2148-10-290
460:BMC Evolutionary Biology
392:Contributions to Zoology
346:Kallidecthes richardsoni
951:Cumacea (hooded shrimp)
691:Bulletin of Geosciences
577:10.1163/156854069X00286
421:Journal of Paleontology
297:Aenigmacaris cornigerum
660:10.5962/bhl.title.5326
355:Identification/Studies
124:Families & genera
1081:Paleobiology Database
326:aratidecthes johnsoni
276:Families & Genera
975:Euphausiacea (krill)
292:Aenigmacaris minima
211:which lived in the
822:Archaeostomatopoda
1114:Crustacean orders
1096:
1095:
1021:Taxon identifiers
1012:
1011:
1005:
991:
990:
941:Pygocephalomorpha
311:Joanellia elegans
194:
193:
119:
16:(Redirected from
1131:
1089:
1088:
1076:
1075:
1063:
1062:
1061:
1048:
1047:
1046:
1016:
999:
902:(opossum shrimp)
883:Spelaeogriphacea
842:
728:
721:
714:
705:
698:
686:
680:
670:
664:
663:
645:
639:
622:
616:
615:
604:academic.oup.com
595:
589:
588:
556:
543:
542:
510:
504:
503:
493:
475:
451:
445:
441:
435:
417:
411:
410:
408:
382:
282:Aenigmacarididae
221:Madera Formation
132:Aenigmacarididae
114:
109:
49:
48:
32:
21:
1139:
1138:
1134:
1133:
1132:
1130:
1129:
1128:
1099:
1098:
1097:
1092:
1084:
1079:
1071:
1066:
1057:
1056:
1051:
1042:
1041:
1036:
1023:
1013:
1008:
987:
955:
888:Thermosbaenacea
869:
865:Palaeocaridacea
831:
801:
764:
738:
732:
702:
701:
687:
683:
671:
667:
647:
646:
642:
626:Joanellia lundi
623:
619:
597:
596:
592:
558:
557:
546:
512:
511:
507:
453:
452:
448:
442:
438:
418:
414:
384:
383:
376:
371:
357:
338:Kallidecthidae
318:Aratidecthidae
308:Joanellia lundi
261:
249:
223:in New Mexico.
113:
107:
43:
35:Aeschronectida
28:
23:
22:
15:
12:
11:
5:
1137:
1135:
1127:
1126:
1121:
1116:
1111:
1101:
1100:
1094:
1093:
1091:
1090:
1077:
1064:
1059:Aeschronectida
1049:
1033:
1031:
1029:Aeschronectida
1025:
1024:
1019:
1010:
1009:
1007:
1006:
996:
993:
992:
989:
988:
986:
985:
977:
972:
970:Angustidontida
965:
963:
957:
956:
954:
953:
948:
943:
937:
930:
925:
918:
913:
908:
903:
895:
890:
885:
879:
877:
871:
870:
868:
867:
861:
856:
850:
848:
839:
837:Eumalacostraca
833:
832:
830:
829:
824:
818:
816:Aeschronectida
811:
809:
803:
802:
800:
799:
792:
787:
781:
774:
772:
766:
765:
763:
762:
756:
750:
743:
740:
739:
733:
731:
730:
723:
716:
708:
700:
699:
681:
665:
640:
617:
590:
571:(3): 243–250.
544:
505:
446:
436:
427:(1), 169–174.
412:
399:(3): 155–186.
373:
372:
370:
367:
362:Aeschronectida
356:
353:
352:
351:
350:
349:
348:
347:
336:
335:
334:
329:
328:
327:
316:
315:
314:
313:
312:
309:
301:
300:
299:
294:
260:
257:
252:Aeschronectida
248:
245:
233:Aeschronectida
225:Aeschronectida
199:is an extinct
197:Aeschronectida
192:
191:
190:
189:
178:Kallidecthidae
174:
173:
166:
155:Aratidecthidae
151:
150:
143:
126:
125:
121:
120:
111:Aeschronectida
105:
101:
100:
95:
91:
90:
85:
81:
80:
75:
71:
70:
65:
61:
60:
55:
51:
50:
37:
36:
26:
24:
18:Aratidecthidae
14:
13:
10:
9:
6:
4:
3:
2:
1136:
1125:
1122:
1120:
1117:
1115:
1112:
1110:
1107:
1106:
1104:
1087:
1082:
1078:
1074:
1069:
1065:
1060:
1054:
1050:
1045:
1039:
1035:
1034:
1032:
1030:
1026:
1022:
1017:
1003:
998:
997:
994:
984:
982:
978:
976:
973:
971:
967:
966:
964:
962:
958:
952:
949:
947:
944:
942:
938:
936:
935:
931:
929:
928:Ingolfiellida
926:
924:
923:
919:
917:
914:
912:
909:
907:
904:
901:
900:
896:
894:
893:Lophogastrida
891:
889:
886:
884:
881:
880:
878:
876:
872:
866:
862:
860:
859:Bathynellacea
857:
855:
852:
851:
849:
847:
843:
840:
838:
834:
828:
825:
823:
819:
817:
813:
812:
810:
808:
804:
797:
793:
791:
788:
786:
782:
780:
779:Archaeostraca
776:
775:
773:
771:
767:
761:
757:
755:
751:
749:
745:
744:
741:
737:
729:
724:
722:
717:
715:
710:
709:
706:
696:
692:
685:
682:
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675:
669:
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661:
657:
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644:
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637:
633:
632:
627:
621:
618:
613:
609:
605:
601:
594:
591:
586:
582:
578:
574:
570:
566:
562:
555:
553:
551:
549:
545:
540:
536:
532:
528:
524:
520:
516:
509:
506:
501:
497:
492:
487:
483:
479:
474:
469:
465:
461:
457:
450:
447:
440:
437:
434:
430:
426:
422:
416:
413:
407:
402:
398:
394:
393:
388:
381:
379:
375:
368:
366:
363:
354:
345:
344:
343:
340:
339:
337:
333:
330:
325:
324:
323:
320:
319:
317:
310:
307:
306:
305:
302:
298:
295:
293:
290:
289:
288:
285:
284:
283:
280:
279:
278:
277:
273:
272:
267:
266:
258:
256:
253:
246:
244:
242:
238:
234:
230:
226:
222:
218:
217:Carboniferous
214:
213:Mississippian
210:
206:
205:mantis shrimp
202:
198:
188:
187:
183:
182:
181:
180:
179:
172:
171:
167:
165:
164:
160:
159:
158:
157:
156:
149:
148:
144:
142:
141:
137:
136:
135:
134:
133:
127:
122:
117:
112:
106:
103:
102:
99:
96:
93:
92:
89:
86:
83:
82:
79:
76:
73:
72:
69:
66:
63:
62:
59:
56:
53:
52:
47:
42:
38:
33:
30:
19:
1028:
1001:
980:
932:
920:
906:Stygiomysida
897:
815:
796:Hymenostraca
770:Phyllocarida
736:Malacostraca
697:(1), 95-110.
694:
690:
684:
668:
650:
643:
635:
629:
625:
620:
603:
593:
568:
564:
522:
518:
508:
463:
459:
449:
439:
424:
420:
415:
396:
390:
361:
358:
342:Kallidecthes
322:Aratidecthes
296:
291:
287:Aenigmacaris
275:
274:
268:
265:Malacostraca
262:
251:
250:
237:hoplocaridan
232:
224:
196:
195:
186:Kallidecthes
184:
176:
175:
168:
163:Aratidecthes
161:
153:
152:
145:
140:Aenigmacaris
138:
130:
129:
110:
88:Malacostraca
29:
1053:Wikispecies
854:Anaspidacea
807:Hoplocarida
790:Leptostraca
785:Hoplostraca
758:Subphylum:
638:(4): 53–56.
565:Crustaceana
525:(5): 1–11.
271:Hoplocarida
241:Stomatopoda
229:Stomatopoda
209:crustaceans
98:Hoplocarida
1103:Categories
946:Tanaidacea
916:Bochusacea
875:Peracarida
754:Arthropoda
734:Orders of
466:(1): 290.
369:References
332:Crangopsis
269:Subclass:
247:Morphology
170:Crangopsis
94:Subclass:
78:Arthropoda
922:Amphipoda
846:Syncarida
760:Crustacea
585:0011-216X
539:0278-0372
482:1471-2148
304:Joanellia
147:Joanellia
64:Kingdom:
58:Eukaryota
1044:Q4688535
1038:Wikidata
981:Decapoda
961:Eucarida
911:Mictacea
752:Phylum:
748:Animalia
746:Kingdom
500:20858249
259:Taxonomy
74:Phylum:
68:Animalia
54:Domain:
934:Isopoda
678:1304745
491:2955030
433:1304046
263:Class:
104:Order:
84:Class:
899:Mysida
676:
583:
537:
498:
488:
480:
431:
207:-like
118:, 1969
116:Schram
1086:22283
1073:10196
1068:IRMNG
674:JSTOR
429:JSTOR
201:order
1002:bold
581:ISSN
535:ISSN
496:PMID
478:ISSN
656:doi
608:doi
573:doi
527:doi
486:PMC
468:doi
401:doi
203:of
1105::
1083::
1070::
1055::
1040::
695:98
693:,
636:19
634:.
606:.
602:.
579:.
569:16
567:.
563:.
547:^
533:.
523:20
521:.
517:.
494:.
484:.
476:.
464:10
462:.
458:.
425:53
423:,
397:67
395:.
389:.
377:^
243:.
968:†
939:†
863:†
820:†
814:†
798:?
794:†
783:†
777:†
727:e
720:t
713:v
662:.
658::
614:.
610::
587:.
575::
541:.
529::
502:.
470::
409:.
403::
108:†
20:)
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