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113:
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Alpheus Hyatt and James Perrin Smith, 1905. The
Triassic Cephalopod Genera of America. U.S. Geological Survey Professional Paper no. 40. (p. 114-115)
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Arkell, et al., 1957. Mesozoic
Ammonidea. Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geol Soc of America and Univ. Kansas Press.
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Hyatt and Smith (1905, p. 114-115) included the
Gymnitidae in the suborder Ceratitoidea, which later became the superfamily
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with its coeval or more advanced relatives is a matter of perspective which does little to change the overall phylogeny.
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with its more primitive relatives, or in the
Pinacocerataceae, as in Arkell et al., combining
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with coeval and more advanced forms. Genera included in the
Gymnitidae sensu Arkell include
313:, found in Lower Triassic beds in western America have ceratitic sutures. The more developed
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Whether to place the
Gymnitidae in the Ceratitaceae, as in Hyatt and Smith, combining
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as the earlier and more primitive of its two families, combining
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292:. Derivation as shown in Smith (1932 p. 30) is from
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324:, on the other hand included the Gymnitidae in the
114:Galerie de paléontologie et d'anatomie comparée
264:and included in it genera more primitive than
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257:cephalopods with evolute, discoidal shells.
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317:has deeply digitate ammonitic sutures.
322:Treatise on Invertebrate Paleontology
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550:. You can help Knowledge (XXG) by
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612:Early Triassic first appearances
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360:was included by Tozer in 1981.
250:is a family of Lower to Middle
30:Early Triassic–Middle Triassic
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320:Arkell, et al., 1957, in the
270:as well as the more advanced
617:Middle Triassic extinctions
112:from Bosnia, on display at
16:Extinct family of ammonites
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122:Scientific classification
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546:-related article is a
509:Paleobiology Database
602:Ceratitida families
403:Paleontology portal
301:The more primitive
387:James Perrin Smith
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496:Open Tree of Life
415:Taxon identifiers
350:, and of course,
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110:Gymnites incultus
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622:Ceratitida stubs
607:Pinacocerataceae
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357:Xiphogymnites
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552:expanding it
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354:. The genus
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262:Ceratitaceae
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307:Flemingites
283:Flemingites
169:Cephalopoda
597:Gymnitidae
591:Categories
544:Ceratitida
423:Gymnitidae
375:References
341:Buddhaites
335:Eogymnites
295:Xenodiscus
248:Gymnitidae
221:Gymnitidae
195:Ceratitida
182:Ammonoidea
175:Subclass:
24:Gymnitidae
347:Japanites
311:Ophiceras
289:Ophiceras
240:See text
145:Kingdom:
139:Eukaryota
116:in Paris
446:BioLib:
438:Q5624496
432:Wikidata
369:Gymnites
365:Gymnites
352:Gemnites
330:Gymnites
315:Gymnites
303:Xenaspis
277:Xenaspis
272:Gymnites
267:Gymnites
255:ammonite
252:Triassic
214:Family:
159:Mollusca
155:Phylum:
149:Animalia
135:Domain:
501:4955941
475:3245977
234:Genera
188:Order:
165:Class:
488:111694
449:414950
309:, and
286:, and
228:, 1898
226:Waagen
542:This
514:86680
483:IRMNG
462:625DL
548:stub
470:GBIF
35:Preęž’
457:CoL
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192:â€
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