Bivalvia - Cardiida - Veneridae
Alternative spellings: Compsomyax, Katherinella (Compsomyax)
Full reference: R. B. Stewart. 1930. Gabb's California Cretaceous and Tertiary type lamellibranchs. The Academy of Natural Sciences of Philadelphia Special Publication 3:1-314
Parent taxon: Venerella according to Weaver 1943
See also Sepkoski 2002 and Woodring 1938
Sister taxa: Venerella secunda, Venerella striatula
Subtaxa: Compsomyax stewarti Compsomyax subdiaphana Venerella (Compsomyax) gibbosus
Type: Clementia subdiaphana
Distribution:
• Quaternary of United States (28: California collections)
• Pliocene of United States (6: California)
• Miocene to Pliocene of United States (5: California)
• Miocene of Japan (2), United States (2: California)
• Eocene of Colombia (1)
Total: 44 collections each including a single occurrence