123:
297:
specimens reach a total shell length of up to 4 millimetres (0.16 in) and a height of 25 millimetres (0.98 in). The shells are compressed laterally and the back edge is slightly broadened. The rear adductor is less developed and smaller than the front adductor, while the small pedal
102:
298:
retractor muscle scar is positioned near the front adductor scar. The valve hinge is usually straight to slightly convexly curved and each valve will have at most one tooth present. The external surface of the shell occasionally show faint ribbing.
313:
species have an overall shape which is suboval, with the subequal valves slightly elongated. The ligament is straight with an umbo which is central to subcentral. In contrast to
671:
442:
317:
the rear adductor muscle was larger and more developed then the front adductor, with pallial muscles arranged along the valve margins. Also in contrast to
325:
possess between one and three teeth, with up to two teeth per valve. The exteriors of the shells show faint ribbing and fine comarginal growth lines.
274:, each with up to three described species. Due to the size and age of the fossil specimens, Fordillidae species are included as part of the Turkish
658:
738:
748:
710:
537:
262:
age found in North
America, Greenland, Europe, the Middle East, Asia, and Australia. The family currently contains two genera,
519:
504:
753:
481:
122:
743:
403:
613:
451:
Barrande, 1881, from the Middle East (Taurus
Mountains, Turkey) and critical review of Cambrian bivalves"
697:
715:
473:
275:
117:
702:
553:
684:
645:
689:
676:
591:
465:
247:
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101:
345:
557:
732:
596:
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59:
477:
650:
255:
190:
177:
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34:
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391:. Vol. 30 of Geological Survey bulletin. Govt. Print. Off. pp. 1–369.
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are small, with valves to less than 2 millimetres (0.079 in) in length.
79:
44:
348:. The structuring is similar to shell layering found in the extinct genera
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134:
84:
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Second contribution to the studies on the
Cambrian faunas of North America
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164:
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74:
69:
54:
49:
39:
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244:
89:
64:
144:
607:
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611:
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and the independent origin of nacre within the
Mollusca"
404:"A Synoptical Classification of the Bivalvia (Mollusca)"
574:
Vendrasco, M.J.; Checa, A.G.; Kouchinsky, A.V. (2011).
360:
which is thought to suggest that members of the phylum
293:
that are equal in size and suboval in shape. In size
620:
254:and one of two families in the extinct superfamily
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567:
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8:
436:
434:
432:
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428:
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576:"Shell microstructure of the early bivalve
505:The Paleobiology Database Fordillidae entry
608:
100:
20:
595:
542:Barrande and early pelecypod phylogeny"
377:
258:. The family is known from fossils of
7:
546:Bulletins of American Paleontology
402:Carter, J.G.; et al. (2011).
385:Charles Doolittle Walcott (1886).
336:species both consist of layers of
14:
597:10.1111/j.1475-4983.2011.01056.x
121:
340:, which is akin to the laminar
30:Tommotian–early Middle Cambrian
441:Elicki, O.; Gürsu, S. (2009).
1:
411:Paleontological Contributions
368:independently several times.
739:Prehistoric bivalve families
458:Paläontologische Zeitschrift
770:
749:Cambrian first appearances
520:The Paleobiology Database
328:The inner shell layers of
16:Extinct family of bivalves
470:10.1007/s12542-009-0021-9
218:
213:
118:Scientific classification
116:
108:
99:
23:
289:are small bivalves with
260:early to middle Cambrian
526:accessed 4 January 2012
507:accessed 4 January 2012
344:layer found in extant
698:Paleobiology Database
754:Cambrian extinctions
556:–384. Archived from
112:outer shell surface
536:Pojeta, J. (1975).
540:Fordilla troyensis
445:Pojetaia runnegari
276:Small shelly fauna
110:Fordilla troyensis
744:Cambrian molluscs
726:
725:
685:Open Tree of Life
614:Taxon identifiers
443:"First record of
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480:. Archived from
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27:Temporal range:
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590:(4): 825–850.
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560:on 2012-01-06.
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464:(2): 267–291.
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346:monoplacophora
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584:Palaeontology
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487:on 2013-10-29
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305:, species of
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184:Superfamily:
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558:the original
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489:. Retrieved
482:the original
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322:
321:, valves of
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256:Fordilloidea
240:
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208:Pojeta, 1975
203:
191:Fordilloidea
109:
18:
622:Fordillidae
301:Similar to
282:Description
241:Fordillidae
204:Fordillidae
24:Fordillidae
733:Categories
491:2012-01-06
372:References
364:developed
357:Watsonella
351:Anabarella
178:Fordillida
342:aragonite
338:carbonate
250:of early
141:Kingdom:
135:Eukaryota
637:Q5468085
631:Wikidata
578:Pojetaia
522:Fordilla
478:49380913
449:Fordilla
362:Mollusca
334:Pojetaia
330:Fordilla
323:Pojetaia
319:Fordilla
315:Fordilla
311:Pojetaia
307:Pojetaia
303:Fordilla
295:Fordilla
287:Fordilla
271:Pojetaia
265:Fordilla
252:bivalves
230:Pojetaia
223:Fordilla
197:Family:
165:Bivalvia
155:Mollusca
151:Phylum:
145:Animalia
131:Domain:
690:2865287
664:4587880
417:: 1–47.
245:extinct
214:Genera
171:Order:
161:Class:
716:833024
677:100612
476:
291:valves
248:family
243:is an
711:WoRMS
703:60382
672:IRMNG
651:7NWL3
524:entry
485:(PDF)
474:S2CID
454:(PDF)
407:(PDF)
366:nacre
659:GBIF
354:and
332:and
268:and
35:PreꞒ
646:CoL
592:doi
554:363
466:doi
735::
713::
700::
687::
674::
661::
648::
633::
588:54
586:.
582:.
566:^
552::
550:67
548:.
544:.
512:^
472:.
462:83
460:.
456:.
423:^
413:.
409:.
278:.
85:Pg
600:.
594::
538:"
494:.
468::
415:4
201:†
188:†
175:†
90:N
80:K
75:J
70:T
65:P
60:C
55:D
50:S
45:O
40:Ꞓ
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