Mysella is a genus of marine bivalve molluscs of the family Lasaeidae.
Description
Shells of Mysella are thin and concentrically striated. Shells range from small to moderately sized, are inequilateral, and has a produced anterior end. The hinge has a small triangular internal cartilage pit. 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. Mysella have limited external sculpture, and are most commonly under in size, with some species reaching a length of .
Taxonomy The genus was first described in 1877 by George French Angas.
Distribution Mysella has a global distribution. The earliest known fossils of the genus date to the Paleocene, and have been found in Alabama and Texas in the United States.
Species Species within the genus Mysella include:
Mysella alpha Mysella angasiana Mysella antarctica † Mysella apudalpha Mysella australis Mysella beta Mysella bladensis Mysella concentrica Mysella cretacea Mysella donaciformis Mysella gurjanovae Mysella henryi Mysella hounselli Mysella lachlani Mysella lactea Mysella larochei Mysella macquariensis Mysella morioria Mysella nipponica Mysella ovalis Mysella ovata Mysella patagona Mysella planata † Mysella putealis Mysella rochebrunei Mysella spernax Mysella tanabensis † Mysella tellinoides Mysella tellinula † Mysella trigonoelliptica Mysella unidentata Mysella ventricosa Mysella vitrea
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