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Trianglaspira
Taxonomy
Trianglaspira was named by Pan (1982) [Sepkoski's age data: J l Sepkoski's reference number: ZR82].
It was assigned to Coelostylinidae by Pan (1982); and to Neotaenioglossa by Sepkoski (2002).
It was assigned to Coelostylinidae by Pan (1982); and to Neotaenioglossa by Sepkoski (2002).
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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.
G. †Trianglaspira Pan 1982
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. Z. Pan 1982 | Shell small in size, roundly-ovate to conically ovate in outline, having 4—5 whorls, Apex sharp and spire conical, the early whorls increase slowly, but the last whorl is rapidly and distinctly dilated, subcircular. Suture distinctly visible, near aperture bearing a strongly sutural groove, upper side of the aperture having a slightly convex triangular area, base convex, anomphalous or umbilical fissure. Aperture ovate-oblong in shape, the smooth surface is ornamented by fine spiral lines and fine growth lines. |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available