Divarilima
Genus of bivalves
From Wikipedia, the free encyclopedia
Divarilima is a genus of marine bivalve molluscs in the family Limidae, the file shells or file clams.[1]
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| Divarilima | |
|---|---|
| |
| Divarilima albicoma | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Limida |
| Superfamily: | Limoidea |
| Family: | Limidae |
| Genus: | Divarilima Powell, 1958 |
| Type species | |
| Lima sydneyensis | |
Description
In the original description, Powell described the genus as below:
It is a miniature Lima with a Ctenoides sculptural pattern of divaricating threads. It resembles the typical species except that a mature stage of arrested growth is reached at a small size, corresponding with the early post-larval stages in Lima typical.[2]
Members of the genus are small, trigonally ovate, strongly inequilateral, and have sharp. backward-pointing umbones. The anterodorsal outline almost straight, extended, coinciding with well-marked a umbonal ridge which borders a concave lunule.[3]
Taxonomy
The genus was first described by A. W. B. Powell in 1958, who named Lima sydneyensis as the type species of the genus.[2] The genus is in the family Limidae.[4]
Distribution
Divarilima is found in oceans across the globe, including waters near Japan, the western Atlantic, South Africa, Australia and New Zealand.[5]
Species
Species within the genus Divarilima include:[1]
- Divarilima abscisa (Barnard, 1964)
- Divarilima albicoma (Dall, 1886)
- † Divarilima aucklandensis (Laws, 1950)[6]
- Divarilima elegans Hayami & Kase, 1993
- Divarilima handini J. Gibson-Smith & W. Gibson-Smith, 1982
- Divarilima iwaotakii (T. Habe, 1961)
- Divarilima sydneyensis (Hedley, 1904)