Fissurella verna
Species of gastropod
From Wikipedia, the free encyclopedia
Fissurella verna is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.[1]
| Fissurella verna | |
|---|---|
| |
| Five views of the shell of Fissurella verna | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Lepetellida |
| Family: | Fissurellidae |
| Genus: | Fissurella |
| Species: | F. verna |
| Binomial name | |
| Fissurella verna Gould, 1846 | |
Description
The shell varies in size from 20 to 51 millimetres (0.79 to 2.01 in) in length. It is solid, oval, and symmetrical with a depressed-conical profile. The exterior surface is striated and bears about 20–30 low radiating ribs separated by interspaces of roughly equal width.[2]
The coloration is described as grey-green with dark purplish radial markings. The apex is purplish, and the interior is pale with a slightly greenish or garlic-colored tint. The apical opening (foramen) is small and oval. The shell margin is faintly crenulated and radially striated.[2]
Gould reported shell dimensions of approximately 35 millimetres (1.4 in) in length, 31 millimetres (1.2 in) in width and 13 millimetres (0.51 in) in height.[2]
Distribution
This marine species occurs in the Atlantic Ocean around the Cape Verde archipelago. The type locality was given as Porto Praia on Santiago Island.[2]
The species is considered part of the endemic fissurellid fauna of the islands.[1]
