Divarilima
Genus of bivalves

Divarilima is a genus of marine bivalve molluscs in the family Limidae, the file shells or file clams.
01Description
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.
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.

02Taxonomy
The genus was first described by A. W. B. Powell in 1958, who named Lima sydneyensis as the type species of the genus. The genus is in the family Limidae.
03Distribution
Divarilima is found in oceans across the globe, including waters near Japan, the western Atlantic, South Africa, Australia and New Zealand.
04Species
Species within the genus Divarilima include:
- Divarilima abscisa (Barnard, 1964)
- Divarilima albicoma (Dall, 1886)
- † Divarilima aucklandensis (Laws, 1950)
- Divarilima elegans Hayami & Kase, 1993
- Divarilima handini J. Gibson-Smith & W. Gibson-Smith, 1982
- Divarilima iwaotakii (T. Habe, 1961)
- Divarilima sydneyensis (Hedley, 1904)
Sources and credits
This article is adapted from the Wikipedia article “Divarilima”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Divarilima albicoma (Dall, 1886) Collection Natural History Museum Rotterdam NMR993000016239.jpg by Collection Natural History Museum Rotterdam, CC BY 4.0
- Divarilima albicoma.png by William Healey Dall (1845-1927), Public domain
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