Gastropoda - Sorbeoconcha - Thiaridae

Full reference: C. W. Cooke. 1919. Tertiary mollusks from the Leeward Islands and Cuba. Contributions to the geology and paleontology of the West Indies. Carnegie Institution of Washington 105-156

Belongs to Hemisinus according to C. W. Cooke 1919

Sister taxa: Hemisinus (Cubaedomus), Hemisinus (Longiverena), Hemisinus (Verena), Hemisinus antiguensis, Hemisinus atriformis, Hemisinus bituminifer, Hemisinus kochi, Hemisinus siliceus, Hemisinus sulcatus, Hemisinus terebriformis

Type specimen: USNM 166994, a partial shell. Its type locality is USNM 3652, 5312, which is in a Miocene coastal tar in Cuba.

Ecology: epifaunal grazer

Average measurements (in mm): partial shell 20.6 x 10.6