Exomilopsis
Genus of gastropods
From Wikipedia, the free encyclopedia
Exomilopsis is a genus of minute gastropod molluscs belonging to the family Columbellidae.[1] Both species are found in Oceania.
| Exomilopsis | |
|---|---|
| |
| Holotype of E. hipkinsi | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Buccinoidea |
| Family: | Columbellidae |
| Genus: | Exomilopsis A. W. B. Powell, 1964 |
| Type species | |
| Mangelia spica | |
Description
In the original description, Powell described the genus as below:
The new genus Exomulopsis is characterised by its strong superficial resemblance to the Turrid genus Exomilus, i.e. attenuate spire, sagged, low keeled whorls, crossed by axial folds, and a narrow rectangular aperture, but without an anal sinus. The genus Retizafra, to which spica and its allies have most in common, has a fewer whorled more broadly conic protoconch and the shell is of more conventional fusiform shape, the sculpture being axial reticulated by spiral cords.[2]
The genus' tall, conical protoconchs are more similar to barrow forms of columbellids.[3]
Taxonomy
The genus was first described by A. W. B. Powell in 1964, who named Mangelia spica as the type species, and also described a new species in the genus, E. hipkinsi.[2] Boyer et al. (2022) suspect that the genus is likely a synonym of Gatliffena.[4]
Distribution
Species
Species within the genus Exomilopsis include:[1]
- Exomilopsis hipkinsi A. W. B. Powell, 1964
- Exomilopsis spica (Hedley, 1907)