244:
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.
35:
348:
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
432:
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.
243:
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
677:
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.
353:
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.
619:
1056:
228:
morphology by having more unmodified thoracopods. It's theorized that these thoracopods evolved to become more specialized, making them potential ancestors to
1112:
714:
1107:
661:
Schram, F. R. (1984). Upper
Pennsylvanian Arthropods from Black Shales of Iowa and Nebraska. Journal of Paleontology, 58(1), 197–209.
376:"Palaeo- and archaeostomatopods (Hoplocarida: Crustacea) from the Bear Gulch Limestone, Mississippian (Namurian), of central Montana"
1097:
408:
Schram, F. R., & Schram, J. M. (1979). Some Shrimp of the Madera
Formation (Pennsylvanian) Manzanita Mountains, New Mexico.
208:, 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
34:
1102:
707:
380:
640:
Some Middle
Pennsylvanian Hoplocarida (Crustacea) and their phylogenetic significance / Frederick R. Schram --
216:
was first identified appearing in
Continental Europe in around 2014. While sharing similar characteristics to
503:
1009:
1069:
810:
700:
853:
1047:
916:
767:
773:
662:
417:
29:
1074:
929:
569:
523:
484:
466:
445:"Evolution of mantis shrimps (Stomatopoda, Malacostraca) in the light of new Mesozoic fossils"
201:
549:
1061:
871:
644:
596:
561:
515:
474:
456:
389:
270:
120:
104:
617:
sp. nov. (Crustacea: Malacostraca) from the Mississippian Heath Shale of central Montana".
443:
Haug, Joachim T; Haug, Carolin; Maas, Andreas; Kutschera, Verena; Waloszek, Dieter (2010).
958:
876:
189:
600:
589:"'Aeschronectida', Evolution and Phylogeny of Pancrustacea: A Story of Scientific Method"
588:
825:
479:
444:
166:
143:
1091:
881:
847:
815:
229:
217:
205:
193:
894:
758:
724:
330:
310:
275:
253:
209:
174:
151:
128:
76:
220:, they lack certain physical characteristics of that taxon. The first species of
1041:
842:
795:
784:
778:
259:
225:
86:
1032:
934:
904:
863:
748:
519:
394:
375:
320:
224:
is accredited to Frederick R. Schram. They diverge substantially from typical
197:
158:
573:
527:
470:
461:
910:
834:
742:
638:
565:
292:
135:
66:
46:
648:
488:
1026:
968:
949:
899:
692:
939:
922:
666:
421:
887:
736:
56:
1003:
963:
502:
Hof, Cees H. J.; Schram, Frederick R.; Watling, Les (2000-07-20).
374:
Jenner, Ronald A.; Hof, Cees H. J.; Schram, Frederick R. (1998).
204:
subperiod in what is now Montana. They exclusively lived in the
1007:
696:
504:"The Place of the Hoplocarida in the Malacostracan Pantheon"
587:
Schram, Frederick R.; Koenemann, Stefan (20 January 2022).
620:
Transactions of the San Diego Society of Natural History
1016:
948:
862:
833:
824:
794:
757:
637:Schram, Frederick R.; Schram, Frederick R. (1969).
613:Joan M. Schram & Frederick R. Schram (1979). "
972:(shrimp, prawns, crayfish, lobsters, crabs, etc.)
989:The three most speciose orders are marked in
708:
543:
541:
539:
537:
8:
643:. Chicago: Field Museum of Natural History.
1004:
830:
715:
701:
693:
20:
478:
460:
393:
369:
367:
363:
7:
993:; obelisks (†) mark extinct orders.
601:10.1093/oso/9780195365764.003.0022
550:"Polyphyly in the Eumalacostraca?"
433:707-717. 10.3140/bull.geosci.1458.
14:
349:are identified as being part of
33:
1113:Mississippian first appearances
1:
548:Schram, Frederick R. (1969).
508:Journal of Crustacean Biology
1108:Prehistoric arthropod orders
16:Extinct order of crustaceans
816:Stomatopoda (mantis shrimp)
1129:
984:
731:
520:10.1163/1937240X-90000002
395:10.1163/18759866-06703001
117:
112:
30:Scientific classification
28:
23:
1098:Prehistoric Malacostraca
462:10.1186/1471-2148-10-290
449:BMC Evolutionary Biology
381:Contributions to Zoology
335:Kallidecthes richardsoni
940:Cumacea (hooded shrimp)
680:Bulletin of Geosciences
566:10.1163/156854069X00286
410:Journal of Paleontology
286:Aenigmacaris cornigerum
649:10.5962/bhl.title.5326
344:Identification/Studies
113:Families & genera
1070:Paleobiology Database
315:aratidecthes johnsoni
265:Families & Genera
964:Euphausiacea (krill)
281:Aenigmacaris minima
200:which lived in the
811:Archaeostomatopoda
1103:Crustacean orders
1085:
1084:
1010:Taxon identifiers
1001:
1000:
994:
980:
979:
930:Pygocephalomorpha
300:Joanellia elegans
183:
182:
108:
1120:
1078:
1077:
1065:
1064:
1052:
1051:
1050:
1037:
1036:
1035:
1005:
988:
891:(opossum shrimp)
872:Spelaeogriphacea
831:
717:
710:
703:
694:
687:
675:
669:
659:
653:
652:
634:
628:
611:
605:
604:
593:academic.oup.com
584:
578:
577:
545:
532:
531:
499:
493:
492:
482:
464:
440:
434:
430:
424:
406:
400:
399:
397:
371:
271:Aenigmacarididae
210:Madera Formation
121:Aenigmacarididae
103:
98:
38:
37:
21:
1128:
1127:
1123:
1122:
1121:
1119:
1118:
1117:
1088:
1087:
1086:
1081:
1073:
1068:
1060:
1055:
1046:
1045:
1040:
1031:
1030:
1025:
1012:
1002:
997:
976:
944:
877:Thermosbaenacea
858:
854:Palaeocaridacea
820:
790:
753:
727:
721:
691:
690:
676:
672:
660:
656:
636:
635:
631:
615:Joanellia lundi
612:
608:
586:
585:
581:
547:
546:
535:
501:
500:
496:
442:
441:
437:
431:
427:
407:
403:
373:
372:
365:
360:
346:
327:Kallidecthidae
307:Aratidecthidae
297:Joanellia lundi
250:
238:
212:in New Mexico.
102:
96:
32:
24:Aeschronectida
17:
12:
11:
5:
1126:
1124:
1116:
1115:
1110:
1105:
1100:
1090:
1089:
1083:
1082:
1080:
1079:
1066:
1053:
1048:Aeschronectida
1038:
1022:
1020:
1018:Aeschronectida
1014:
1013:
1008:
999:
998:
996:
995:
985:
982:
981:
978:
977:
975:
974:
966:
961:
959:Angustidontida
954:
952:
946:
945:
943:
942:
937:
932:
926:
919:
914:
907:
902:
897:
892:
884:
879:
874:
868:
866:
860:
859:
857:
856:
850:
845:
839:
837:
828:
826:Eumalacostraca
822:
821:
819:
818:
813:
807:
805:Aeschronectida
800:
798:
792:
791:
789:
788:
781:
776:
770:
763:
761:
755:
754:
752:
751:
745:
739:
732:
729:
728:
722:
720:
719:
712:
705:
697:
689:
688:
670:
654:
629:
606:
579:
560:(3): 243–250.
533:
494:
435:
425:
416:(1), 169–174.
401:
388:(3): 155–186.
362:
361:
359:
356:
351:Aeschronectida
345:
342:
341:
340:
339:
338:
337:
336:
325:
324:
323:
318:
317:
316:
305:
304:
303:
302:
301:
298:
290:
289:
288:
283:
249:
246:
241:Aeschronectida
237:
234:
222:Aeschronectida
214:Aeschronectida
188:is an extinct
186:Aeschronectida
181:
180:
179:
178:
167:Kallidecthidae
163:
162:
155:
144:Aratidecthidae
140:
139:
132:
115:
114:
110:
109:
100:Aeschronectida
94:
90:
89:
84:
80:
79:
74:
70:
69:
64:
60:
59:
54:
50:
49:
44:
40:
39:
26:
25:
15:
13:
10:
9:
6:
4:
3:
2:
1125:
1114:
1111:
1109:
1106:
1104:
1101:
1099:
1096:
1095:
1093:
1076:
1071:
1067:
1063:
1058:
1054:
1049:
1043:
1039:
1034:
1028:
1024:
1023:
1021:
1019:
1015:
1011:
1006:
992:
987:
986:
983:
973:
971:
967:
965:
962:
960:
956:
955:
953:
951:
947:
941:
938:
936:
933:
931:
927:
925:
924:
920:
918:
917:Ingolfiellida
915:
913:
912:
908:
906:
903:
901:
898:
896:
893:
890:
889:
885:
883:
882:Lophogastrida
880:
878:
875:
873:
870:
869:
867:
865:
861:
855:
851:
849:
848:Bathynellacea
846:
844:
841:
840:
838:
836:
832:
829:
827:
823:
817:
814:
812:
808:
806:
802:
801:
799:
797:
793:
786:
782:
780:
777:
775:
771:
769:
768:Archaeostraca
765:
764:
762:
760:
756:
750:
746:
744:
740:
738:
734:
733:
730:
726:
718:
713:
711:
706:
704:
699:
698:
695:
685:
681:
674:
671:
668:
664:
658:
655:
650:
646:
642:
641:
633:
630:
626:
622:
621:
616:
610:
607:
602:
598:
594:
590:
583:
580:
575:
571:
567:
563:
559:
555:
551:
544:
542:
540:
538:
534:
529:
525:
521:
517:
513:
509:
505:
498:
495:
490:
486:
481:
476:
472:
468:
463:
458:
454:
450:
446:
439:
436:
429:
426:
423:
419:
415:
411:
405:
402:
396:
391:
387:
383:
382:
377:
370:
368:
364:
357:
355:
352:
343:
334:
333:
332:
329:
328:
326:
322:
319:
314:
313:
312:
309:
308:
306:
299:
296:
295:
294:
291:
287:
284:
282:
279:
278:
277:
274:
273:
272:
269:
268:
267:
266:
262:
261:
256:
255:
247:
245:
242:
235:
233:
231:
227:
223:
219:
215:
211:
207:
206:Carboniferous
203:
202:Mississippian
199:
195:
194:mantis shrimp
191:
187:
177:
176:
172:
171:
170:
169:
168:
161:
160:
156:
154:
153:
149:
148:
147:
146:
145:
138:
137:
133:
131:
130:
126:
125:
124:
123:
122:
116:
111:
106:
101:
95:
92:
91:
88:
85:
82:
81:
78:
75:
72:
71:
68:
65:
62:
61:
58:
55:
52:
51:
48:
45:
42:
41:
36:
31:
27:
22:
19:
1017:
990:
969:
921:
909:
895:Stygiomysida
886:
804:
785:Hymenostraca
759:Phyllocarida
725:Malacostraca
686:(1), 95-110.
683:
679:
673:
657:
639:
632:
624:
618:
614:
609:
592:
582:
557:
553:
511:
507:
497:
452:
448:
438:
428:
413:
409:
404:
385:
379:
350:
347:
331:Kallidecthes
311:Aratidecthes
285:
280:
276:Aenigmacaris
264:
263:
257:
254:Malacostraca
251:
240:
239:
226:hoplocaridan
221:
213:
185:
184:
175:Kallidecthes
173:
165:
164:
157:
152:Aratidecthes
150:
142:
141:
134:
129:Aenigmacaris
127:
119:
118:
99:
77:Malacostraca
18:
1042:Wikispecies
843:Anaspidacea
796:Hoplocarida
779:Leptostraca
774:Hoplostraca
747:Subphylum:
627:(4): 53–56.
554:Crustaceana
514:(5): 1–11.
260:Hoplocarida
230:Stomatopoda
218:Stomatopoda
198:crustaceans
87:Hoplocarida
1092:Categories
935:Tanaidacea
905:Bochusacea
864:Peracarida
743:Arthropoda
723:Orders of
455:(1): 290.
358:References
321:Crangopsis
258:Subclass:
236:Morphology
159:Crangopsis
83:Subclass:
67:Arthropoda
911:Amphipoda
835:Syncarida
749:Crustacea
574:0011-216X
528:0278-0372
471:1471-2148
293:Joanellia
136:Joanellia
53:Kingdom:
47:Eukaryota
1033:Q4688535
1027:Wikidata
970:Decapoda
950:Eucarida
900:Mictacea
741:Phylum:
737:Animalia
735:Kingdom
489:20858249
248:Taxonomy
63:Phylum:
57:Animalia
43:Domain:
923:Isopoda
667:1304745
480:2955030
422:1304046
252:Class:
93:Order:
73:Class:
888:Mysida
665:
572:
526:
487:
477:
469:
420:
196:-like
107:, 1969
105:Schram
1075:22283
1062:10196
1057:IRMNG
663:JSTOR
418:JSTOR
190:order
991:bold
570:ISSN
524:ISSN
485:PMID
467:ISSN
645:doi
597:doi
562:doi
516:doi
475:PMC
457:doi
390:doi
192:of
1094::
1072::
1059::
1044::
1029::
684:98
682:,
625:19
623:.
595:.
591:.
568:.
558:16
556:.
552:.
536:^
522:.
512:20
510:.
506:.
483:.
473:.
465:.
453:10
451:.
447:.
414:53
412:,
386:67
384:.
378:.
366:^
232:.
957:†
928:†
852:†
809:†
803:†
787:?
783:†
772:†
766:†
716:e
709:t
702:v
651:.
647::
603:.
599::
576:.
564::
530:.
518::
491:.
459::
398:.
392::
97:†
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
