| Akera Temporal range: Callovian–recent |
|
|---|---|
| shells of Akera bullata | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Euopisthobranchia clade Aplysiomorpha |
| Superfamily: | Akeroidea |
| Family: | Akeridae |
| Genus: | Akera O. F. Müller, 1776[1] |
Akera is a marine genus of sea hare in the family Akeridae, known from the late Callovian (Jurassic) to the recent periods.[2]
Contents |
Akera is a primitive genus. These sea hares do not fit completely in their external shell; it just covers their visceral hump which is positioned at the posterior end of their bodies. Their streamlined bodies are adapted for burrowing.