Eratotrivia, SACCO, 1894

Groves, Lindsey & Squires, Richard L., 2023, Revision of northeast Pacific Paleogene cypraeoidean gastropods, including recognition of three new species: implications for paleobiogeographic distribution and faunal turnover, PaleoBios 40 (10), pp. 1-52 : 37

ERATOTRIVIA SACCO, 1894

Type Species— Erato crenata (Deshayes, 1835) [= Eratotrivia crenularis Schilder, 1927 , non Oppenheim, 1901], by original designation (of Sacco, 1894: p. 62), Eocene (Lutetian), Chaumont, Haute-Marne Department, France

Diagnosis— Shell small, ob-ovate; spire concealed; columella region attenuated; slight canal; aperture nar- row; outer lip thickened, crenulated internally; surface ornamented by spiral ribs which anastomose in the dorsal region; along the mid-dorsal line, the ribs are interrupted more or less by a shallow groove.

Geologic Range— Early Eocene (Ypresian Stage), Washington ( Squires and Goedert 1994) to late Eocene (Bartonian Stage), Italy ( Dolin and Pacaud 2009).

Remarks — In the NEP region, Eratotrivia occurs as Eratotrivia crescentensis ( Weaver and Palmer 1922) of early Eocene age (“Capay Stage”) in Washington.