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Asperiscala hemphilli
Taxonomy
Scala hemphilli was named by Dall (1878). It is extant.
It was recombined as Epitonium (Asperiscala) hemphilli by Durham (1937); it was recombined as Asperiscala hemphilli by Hendy (2021).
It was recombined as Epitonium (Asperiscala) hemphilli by Durham (1937); it was recombined as Asperiscala hemphilli by Hendy (2021).
Sister species lacking formal opinion data
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Asperiscala hemphilli Dall 1878
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell medium, moderately heavy; umbilicus closed; body whorl fairly large; six or more whorls in adult, nuclear whorls lost in all specimens at hand; whorls nearly semicircular in outline, rather loosely appressed against the preceding whorl, crossed by 10 or 11 strongly reflexed varices varying from thin to heavy, usually with sharp spinose angulation just below suture; on whorls of the spire there are about 14 spiral threads with interspaces of equal size, those on the greatest convexity of the whorl being the most prominent while those just below the suture are obsolete in some specimens, on the body whorl continuing into the closed umbilical area; in some of the interspaces there are fine secondary threads; aperture oval, entire, outer lip thickened by last varix, inner lip rather thin. |