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Mysella

From Wikipedia, the free encyclopedia

Mysella
Temporal range: Paleocene–Recent
Mysella lachlani
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Galeommatida
Family: Lasaeidae
Subfamily: Montacutinae
Genus: Mysella
Type species
Mysella anomala Angas, 1877
Synonyms[1]
  • Calvitium Laseron, 1953
  • Montacuta (Mysella) Angas, 1877
  • Mysella (Rochefortia) Vélain, 1877
  • Rochefortia Vélain, 1877
  • Virmysella Iredale, 1930

Mysella is a genus of marine bivalve molluscs of the family Lasaeidae.[1]

Description

[edit]

Shells of Mysella are thin and concentrically striated.[2] Shells range from small to moderately sized, are inequilateral, and has a produced anterior end.[3] The hinge has a small triangular internal cartilage pit.[2] Members of the genus have a narrow hinge line, a short resilium, and right valves that either have a single oblique anterior tooth, or both an anterior and posterior tooth; the latter being much weaker if present, except in species which are relatively more equilateral.[3] Mysella have limited external sculpture, and are most commonly under 5 mm (0.20 in) in size, with some species reaching a length of 10 mm (0.39 in).[4]

Taxonomy

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The genus was first described in 1877 by George French Angas.[2]

Distribution

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Mysella has a global distribution.[5] The earliest known fossils of the genus date to the Paleocene, and have been found in Alabama and Texas in the United States.[6]

Species

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Species within the genus Mysella include:[1]

[edit]

References

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  1. 1 2 3 Mysella Angas, 1877. Retrieved through: World Register of Marine Species on 3 February 2026.
  2. 1 2 3 Angas, George French (1877), "Description of one genus and twenty-five species of marine shells from New South Wales.", Proceedings of the Zoological Society of London, 1877: 176 via Biodiversity Heritage Library
  3. 1 2 Powell, A.W.B. (1979). New Zealand Mollusca: Marine, Land and Freshwater Shells. Auckland: Collins. p. 395. ISBN 0002169061.
  4. Scott, Paul H. (1987). "A preliminary review of Mysella (Bivalvia, Montacutidae) from the northwestern Pacific". Western Society of Malacologists, Annual Report. 19: 13–14.
  5. "Mysella Angas, 1877". Global Biodiversity Information Facility. Retrieved 3 February 2026.
  6. "Mysella Angas 1877 (clam)". Paleobiology Database. Retrieved 3 February 2026.