Divarilima

Divarilima
Divarilima albicoma
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Limida
Superfamily: Limoidea
Family: Limidae
Genus: Divarilima
Powell, 1958
Type species
Lima sydneyensis

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

Description

Illustration of D. albicoma by William Healey Dall (1902)

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.

Taxonomy

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.

Distribution

Divarilima is found in oceans across the globe, including waters near Japan, the western Atlantic, South Africa, Australia and New Zealand.

Species

Species within the genus Divarilima include:

References

  1. 1 2 Divarilima A. W. B. Powell, 1958. Retrieved through: World Register of Marine Species on 2 October 2025.
  2. 1 2 Powell, Arthur William Baden (1958). "Mollusca of the Kermadec Islands: Part I". Records of the Auckland Institute and Museum. 5: 65–85. JSTOR 42906092. Wikidata Q58676766.
  3. ↑ Cox, L. R.; Hertlein, L. G. (1969). "Mollusca 6 (Bivalvia)". In Moore, R. C. (ed.). Treatise on invertebrate Paleontology. Boulder: Geological Society of America. p. 389. doi:10.17161/dt.v0i0.5590.
  4. ↑ Beu, A.G.; Maxwell, P.A. (1990). "New Zealand Cenozoic Mollusca" (PDF). New Zealand Geological Survey Paleontological Bulletin. 58: 396. ISSN 0114-2283.
  5. ↑ Kilburn, Richard Neil (1998). "The Limidae of South Africa and Mozambique (Mollusca: Bivalvia): genera Limaria, Limatula, Divarilima, Ctenoides and Fukama" (PDF). Annals of the Natal Museum. 39 (1): 203–247. hdl:10520/AJA03040798_266. Wikidata Q94767090.
  6. ↑ Divarilima aucklandensis (Laws, 1950) †. Retrieved through: World Register of Marine Species on 2 October 2025.

Further reading