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Species / Phyllocheilus

Phyllocheilus

Stromboidea


Original Diagnosis of the genus Pterocera (Phyllocheilus) by Gabb, 1868, p. 140:

  • "General form as in Pterocera; outer lip with no digitations, or small ones only; inner lip expanded as a thin plate over the front of the body whorl, and sometimes projecting beyond it laterally; both outer and inner lip deeply notched anteriorly near the canal."

Types: "Pter. speciosa, d'Orb., P. Dupiniana, d'Orb., P. marginata, d'Orb."

Phyllocheilus species are:

see also

Comment

  • The species listed here under Phyllocheilus do not fit into Gabb's diagnosis. This needs further investigation!

History and Synonymy

1876

Malaptera Piette, 1876

1888

Description of Malaptera by Hudleston, 1888, p. 101

  • "Shell thin, fusiform or ovoid, wing very large, multidigitate, palmate, investing, bent back, extended on the columellar side, and sometimes on the posterior portion of the spire; anterior canal placed upon an expansion which forms part of the wing, and consisting of a wide furrow bent backwards as in Aporrhais. — Fischer."

Comment by Hudleston, 1888, p. 101

  • "Such a genus as this possesses more resemblance to the existing Aporrhais than the average Jurassic Alaria does. Indeed, Cossmann ('Étage Bathonien,' p. 71) regards Malaptera as merely a subgenus of Aporrhais. Most of these shells were formerly referred to Pterocera, Lamarck."

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