Lorieroceras

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m (Protected "Lorieroceras" ([move=sysop] (indefinite)))
 
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Genus: '''''Lorieroceras'''''
Genus: '''''Lorieroceras'''''
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'''''Lorieroceras''''' is a genus of the Nothoceratidae known from the Lower Devonian of Europe, the shell of which is torticonic, loosely coiled sinistrally, as in a left handed screw. Whorls are moderately depressed, the siphuncle ventro-marginal, actinosiphonate with fusiform segments that are inflated adapically and contracted adorally.
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'''''Lorieroceras''''' is a genus of the Nothoceratidae known from the Lower [[Devonian]] of Europe, the shell of which is torticonic, loosely coiled sinistrally, as in a left handed screw. Whorls are moderately depressed, the siphuncle ventro-marginal, actinosiphonate with fusiform segments that are inflated adapically and contracted adorally.
''Lorieroceras'' resembles the later planispiral ''[[Nothoceras]]'' from the Middle Devonian, except for being torticonic, or trochoidal. Both genera are the only known coiled nothocerids.  Derivation is probably from ''[[Perimecoceras]]''.
''Lorieroceras'' resembles the later planispiral ''[[Nothoceras]]'' from the Middle Devonian, except for being torticonic, or trochoidal. Both genera are the only known coiled nothocerids.  Derivation is probably from ''[[Perimecoceras]]''.

Latest revision as of 17:41, 28 July 2013

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