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Alpeis
Taxonomy
Alpeis was named by Popov and Cocks (2014). Its type is Mimella tolenensis. It is the type genus of Alpeisinae.
It was assigned to Alpeisinae by Popov and Cocks (2014).
It was assigned to Alpeisinae by Popov and Cocks (2014).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Alpeis Popov and Cocks p. 740 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. E. Popov and L. R. M. Cocks 2014 | Shell dorsibiconvex with a straight, strongly shortened hinge line and gently uniplicate anterior commissure. Ventral interarea almost planar, strongly apsacline to catacline, with incipient deltidial plates; dorsal interarea curved, almost orthocline. Radial ornament multicostellate. Ventral interior with simple teeth and long dental plates almost enclosing a small, subtriangular muscle field with wider adductor scar strongly raised anteriorly. Ventral mantle canal system saccate with short vascula media branching at a short distance from the muscle field. Dorsal interior lacking distinct notothyrial platform. Cardinal process ridge-like with a bilobed posterior face.
Brachiophores high, subtriangular with widely divergent bases almost parallel to the hinge line. Fulcral plates well developed. Adductor muscle field small, weakly impressed, bisected by a faint median ridge. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Nesnidal et al. 2013 | |||||
Collections
No collection or age range data are available