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Words near each other
・ Calocochlia pan
・ Calocochlia pulcherrima
・ Calocomus
・ Calocoris
・ Calocoris affinis
・ Calocoris nemoralis
・ Calocoris roseomaculatus
・ Calocoris texanus
・ Calocosmus
・ Calocrater
・ Calocucullia
・ Calocucullia celsiae
・ Calocybe
・ Calocybe carnea
・ Calocybe gambosa
Calocyrtoceras
・ Calodactylodes
・ Calodactylodes illingworthorum
・ Calodema
・ Calodendrum
・ Calodendrum capense
・ Calodendrum eickii
・ Calodesma
・ Calodesma albiapex
・ Calodesma amica
・ Calodesma apicalis
・ Calodesma approximata
・ Calodesma chesalon
・ Calodesma collaris
・ Calodesma contracta


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Calocyrtoceras : ウィキペディア英語版
Calocyrtoceras


''Calocyrtoceras'' is an orthocerid genus (Cephalopoda, Nautiloidea), from the middle Silurian of North America (Quebec) and central Europe.
The shell, or conch, of ''Calocyrtoceras'' is generally characteristic of its family, the Paraphragmitidae, an anulated cyrtocone. In the case of ''Calocyrtoceras'' striated both transversely and longitudinally.
Similar ''Cyrtocycloceras'' from the Middle Silurian of Europe is only striated transversely while similar ''Gaspocyclocas'' from the Middle Silurian of North America is only striated longitudinally.
==References==

* Walter C. Sweet, 1964. Nautiloidea -Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
* (''Calocyrtoceras'' ), Fossilworks, PaleoDB gateway

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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