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133:(Cephalopoda, Nautiloidea), from the middle Silurian of North America (Quebec) and central Europe.
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from the Middle
Silurian of Europe is only striated transversely while similar
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from the Middle
Silurian of North America is only striated longitudinally.
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172:Walter C. Sweet, 1964. Nautiloidea -Orthocerida.
148:striated both transversely and longitudinally.
140:is generally characteristic of its family, the
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144:, an annulated cyrtocone. In the case of
176:, Part K. Geological Society of America.
174:Treatise on Invertebrate Paleontology
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184:, Fossilworks, PaleoDB gateway
1:
353:Prehistoric nautiloid genera
306:. You can help Knowledge by
363:Prehistoric nautiloid stubs
379:
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39:Scientific classification
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136:The shell, or conch, of
29:Temporal range: Middle
302:-related article is a
265:Paleobiology Database
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298:This prehistoric
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252:Open Tree of Life
194:Taxon identifiers
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16:Genus of molluscs
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358:Silurian animals
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142:Paraphragmitidae
98:Paraphragmitidae
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154:Cyrtocycloceras
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202:Calocyrtoceras
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181:Calocyrtoceras
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146:Calocyrtoceras
138:Calocyrtoceras
129:is a genus of
126:Calocyrtoceras
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111:Calocyrtoceras
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25:Calocyrtoceras
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160:Gaspocyclocas
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308:expanding it
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117:Foerste 1936
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131:orthocerids
86:Orthocerida
74:Cephalopoda
347:Categories
167:References
300:nautiloid
217:Q22286975
45:Kingdom:
211:Wikidata
151:Similar
93:Family:
62:Mollusca
57:Phylum:
50:Animalia
31:Silurian
257:2873583
244:1360403
231:4621002
105:Genus:
81:Order:
69:Class:
270:12472
239:IRMNG
304:stub
226:GBIF
349::
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335:e
328:t
321:v
310:.
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