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Kotakaia
Taxonomy
Kotakaia was named by Beu (1988) [Sepkoski's age data: T Than Sepkoski's reference number: 909].
It was assigned to Personidae by Beu (1988); and to Opisthobranchia by Sepkoski (2002).
It was assigned to Personidae by Beu (1988); and to Opisthobranchia 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. †Kotakaia Beu 1988
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. G. Beu 1988 | Shell small (to 20 mm high), with regularly coiled whorls; sculpture of simple low spiral cords (no axial sculpture visible); low, wide varices every 0.66 whorls; a short, straight, widely open anterior canal deflected strongly to the left; and a heavy apertural armature of high, narrowly rounded ridges, four inside the outer lip, one on the parietal area, and two (and, on some specimens, a very weak third) on a large, protruding callus-pad at the top of the anterior siphonal canal. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||