Neocardioceras
Neocardioceras is a genus of evolute acanthoceratid ammonites from the uppermost Cenomanian, Upper Cretaceous, of Europe, western U.S. and Brazil. As described in Cobban, Hook & Kenneday, 1989, Neocardioceras is a fairly small, moderately evolute, generally compressed ammonite that has prominent and very numerous rectoradiate to prorsiradate ribs and umbilical, inner and outer, and siphonal (mid ventral) tubercles. Primary ribs begin in the umbilicus or rise from umbilical tubercles and secondary ribs arise further out on the flank. The ribs bend forward at the position of the inner ventrolateral tubercles and cross the venter as chevrons, where they support the outer ventrolateral and siphonal tubercles.
AcanthoceratinaeList of ammonite generaList of the Mesozoic life of ArizonaList of the Mesozoic life of CaliforniaList of the Mesozoic life of ColoradoList of the Mesozoic life of MontanaList of the Mesozoic life of South DakotaList of the Mesozoic life of TexasList of the Mesozoic life of UtahList of the Mesozoic life of WyomingList of the prehistoric life of ArizonaList of the prehistoric life of CaliforniaList of the prehistoric life of ColoradoList of the prehistoric life of MontanaList of the prehistoric life of New MexicoList of the prehistoric life of South DakotaList of the prehistoric life of TexasList of the prehistoric life of UtahList of the prehistoric life of WyomingNeocardioceras densicostatumNeocardioceras juddiiNeocardioceras laevigatumNeocardioceras minutumNeocardioceras transiensNeocardioceras uptonenseTropic ShaleWatinoceras
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Neocardioceras
Neocardioceras is a genus of evolute acanthoceratid ammonites from the uppermost Cenomanian, Upper Cretaceous, of Europe, western U.S. and Brazil. As described in Cobban, Hook & Kenneday, 1989, Neocardioceras is a fairly small, moderately evolute, generally compressed ammonite that has prominent and very numerous rectoradiate to prorsiradate ribs and umbilical, inner and outer, and siphonal (mid ventral) tubercles. Primary ribs begin in the umbilicus or rise from umbilical tubercles and secondary ribs arise further out on the flank. The ribs bend forward at the position of the inner ventrolateral tubercles and cross the venter as chevrons, where they support the outer ventrolateral and siphonal tubercles.
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Neocardioceras is a genus of e ...... ras from the otherwise similar
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Spath, 1926
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Neocardioceras
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Neocardioceras is a genus of e ...... ateral and siphonal tubercles.
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Neocardioceras
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