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Sutures are ammonitic, with digitate lobes and submonophyllic saddles. The external, (or ventral), lobe is divided by a broad digitate siphonal saddle with each side of the lobe deeply trifid. The two or three principal lateral lobes on either side that are wide and deeply digitate, followed dorsally
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is laterally compressed and involute. Whorls are deeply embracing, increasing rapidly in height. Umbilicus is narrow and deep with rounded shoulders. Sides gently convex, converging on a narrow-rounded venter.
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by another three or more smaller, also digitate, auxiliary lobes. The first lateral saddle is typically indented only on the ventral (rim) side and the second lateral saddle only of the dorsal side.
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W.J. Arkell et al.,1957. Mesozoic
Ammonoidea. Treatise on Invertebrate Paleontology, Part L. Geological Soc of America. Geological Society of America and University of Kansas Press.
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in the
Ussuriidae, based on Siberian forms, which is followed by W.J. Akell, et al., in the
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with a smooth, involute discoidal shell with submonophyllic sutures, belonging to the
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279:Other classifications place Ussuriidae, including
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258:part L, 1957. Related genera include
233:, the intermediate growth stage like
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399:. You can help Knowledge (XXG) by
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302:Paleobiology Database-Ussuria
223:. The early growth stages of
156:is a genus of Lower Triassic
174:has been found in Russia in
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16:Genus of molluscs (fossil)
219:, commonly placed in the
39:Scientific classification
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461:Triassic animals of Asia
395:-related article is a
190:in the United States.
178:(original discovery),
29:Temporal range: early
358:Paleobiology Database
213:somewhat resembles
451:Triassic ammonites
296:James Perrin Smith
456:Ceratitida genera
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313:Taxon identifiers
256:American Treatise
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250:classified
221:Ptychitidae
194:Description
74:Cephalopoda
446:Noritoidea
440:Categories
393:Ceratitida
287:References
273:Parussuria
267:Oxyussuria
261:Metussuria
166:Ussuriidae
122:Ussuriidae
110:Noritaceae
98:Ceratitida
86:Ammonoidea
81:Subclass:
227:are like
162:ceratitid
158:ammonites
45:Kingdom:
336:Q7902134
330:Wikidata
243:Taxonomy
117:Family:
62:Mollusca
57:Phylum:
50:Animalia
31:Triassic
321:Ussuria
281:Ussuria
252:Ussuria
225:Ussuria
211:Ussuria
200:Ussuria
176:Siberia
172:Ussuria
164:family
153:Ussuria
135:Ussuria
129:Genus:
93:Order:
69:Class:
25:Ussuria
270:, and
216:Sturia
186:, and
144:, 1895
142:Diener
391:This
363:14444
248:Hyatt
188:Idaho
180:China
397:stub
350:85FV
184:Oman
345:CoL
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428:e
421:t
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