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with deeply embracing whorls that are higher than wide, a steep sided umbilicus and a narrowly rounded venter. Ornament consists of primary ribs that begin at the umbilical shoulder and smaller secondary ribs that begin mid flank. Ribs are sigmodal, periodically thickened and bent forward on the
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William A Cobban & Stephen C. Hook. 1983. . Mid-Cretaceous (Turonian) ammonite fauna from Fence Lake area of west-central New Mexico. Memoir 41 New Mexico Bureau of Mines and
Mineral Resources.
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outer flank to cross the venter as chevrons. The suture has a broad trifid lateral lobe.
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Part L Mollusca 4. Geological
Society of America and University of Kansas Press.
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260:W.J. Arkell, et al., 1957. Mesozoic Ammonoidea,
251:is more evolute in form, but otherwise similar.
234:(type), known from western Europe and the U.S.,
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262:Treatise on Invertebrate Paleontology
238:, known from Arizona and Kansas, and
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242:known from Arizona and New Mexico.
402:. You can help Knowledge (XXG) by
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222:is a large moderately involute
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232:Tregodesmoceras clypealoides
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459:Ammonites of North America
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240:Tragodesoceras socorroense
105:Scientific classification
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20:
398:-related article is a
236:Tragodesmosderas bassi
361:Paleobiology Database
454:Cretaceous ammonites
464:Ammonitida genera
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348:Open Tree of Life
277:Taxon identifiers
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230:Species include
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191:Muniericeratidae
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26:Temporal range:
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98:Late Cretaceous
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404:expanding it
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245:The related
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210:Spath, 1922
152:Cephalopoda
443:Categories
255:References
178:Ammonitida
165:Ammonoidea
158:Subclass:
300:Q18353851
128:Kingdom:
122:Eukaryota
396:ammonite
294:Wikidata
224:ammonite
184:Family:
142:Mollusca
138:Phylum:
132:Animalia
118:Domain:
353:2870213
340:1211965
327:4625322
197:Genus:
171:Order:
148:Class:
92:↓
394:This
366:15751
335:IRMNG
400:stub
322:GBIF
314:7YH2
31:Preκ
309:CoL
445::
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350::
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311::
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81:Pg
431:e
424:t
417:v
406:.
201:β
188:β
175:β
162:β
86:N
76:K
71:J
66:T
61:P
56:C
51:D
46:S
41:O
36:κ
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