Biology:Divarilima
Divarilima is a genus of marine bivalve molluscs in the family Limidae, the file shells or file clams.[1]
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)
References
- ↑ 1.0 1.1 Divarilima A. W. B. Powell, 1958. Retrieved through: World Register of Marine Species on 2 October 2025.
- ↑ 2.0 2.1 , Wikidata Q58676766
- ↑ Cox, L. R.; Hertlein, L. G. (1969). "Mollusca 6 (Bivalvia):". Treatise on invertebrate Paleontology. Boulder: Geological Society of America. p. 389. https://journals.ku.edu/InvertebratePaleo/article/view/5590/5063.
- ↑ Beu, A.G.; Maxwell, P.A. (1990). "New Zealand Cenozoic Mollusca". New Zealand Geological Survey Paleontological Bulletin 58: 396. ISSN 0114-2283. https://pal.gns.cri.nz/mollusca/p_bull_58.pdf.
- ↑ , Wikidata Q94767090
- ↑ Divarilima aucklandensis (Laws, 1950) †. Retrieved through: World Register of Marine Species on 2 October 2025.
Further reading
- Powell, A. W. B. (1979). New Zealand Mollusca. Auckland, New Zealand: William Collins Publishers Ltd. p. 381. ISBN 0-00-216906-1.
External links
- Divarilima albicoma (Dall, 1886) at SealifeBase
Wikidata ☰ Q5283835 entry
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