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produced an evolute shell with a trapezoidal whorl section, slightly impressed inner rim (or dorsum), a somewhat flattened outer rim (venter) and broadly arched sides, covered with fine, weakly crinkled ribs.
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cephalopod genus that lived during the latter part of the Early
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marine sediments. It has been thought of as a subgenus of
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322:, 1957. Systematic Descriptions, Mesozoic Ammonoidea,
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265:and found in lower and possibly middle
324:Treatise on Invertebrate Paleontology
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448:. You can help Knowledge (XXG) by
301:"Sepkoski's Online Genus Database"
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16:Genus of molluscs (fossil)
123:Scientific classification
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299:Sepkoski, Jack (2002).
444:-related article is a
505:Fossils of Madagascar
407:Paleobiology Database
495:Cretaceous ammonites
326:Part L Ammonoidea.
261:, included in the
515:Ammonitida genera
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394:Open Tree of Life
336:Taxon identifiers
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500:Fossils of Japan
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29:Temporal range:
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253:is an extinct
250:Argonauticeras
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450:expanding it
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304:. Retrieved
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263:Lytoceratida
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510:Aptian life
318:W.J Arkell
215:Subfamily:
170:Cephalopoda
489:Categories
442:Ammonitida
306:2014-05-28
286:References
259:Cretaceous
196:Ammonitida
183:Ammonoidea
176:Subclass:
116:Madagascar
146:Kingdom:
140:Eukaryota
359:Q3728038
353:Wikidata
255:ammonoid
202:Family:
160:Mollusca
156:Phylum:
150:Animalia
136:Domain:
399:4955668
386:1049864
373:4627470
228:Genus:
189:Order:
166:Class:
320:et al.
267:Aptian
32:Aptian
440:This
412:14575
381:IRMNG
114:from
446:stub
368:GBIF
37:Preκ
491::
409::
396::
383::
370::
355::
275:.
87:Pg
477:e
470:t
463:v
452:.
309:.
232:β
219:β
206:β
193:β
180:β
92:N
82:K
77:J
72:T
67:P
62:C
57:D
52:S
47:O
42:κ
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