Phylum: Mollusca
Class: Gastropoda
Order: Bellerophontida
Family: Sinuitidae (Dall, 1913)
Cincinnatian Genera: Sinuites

Geologic Range
Late Cambrian – Middle Permian

Common Paleoecology
Sinuitidae is a family of extinct epifaunal detritivores.

Description of the Family

  • Anal emargination is generally a U-shaped sinus
  • Rarely, in some advanced Euphemitinae, anal emargination narrows to broad slit
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Treatise on Invertebrate Paleontology, Part I, Mollusca 1 (1960):

  • Anal emargination mostly an open U-shaped sinus but narrowing to a broad slit in some advanced Euphemitinae

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