EOCYPRAEIDAE SCHILDER, 1924

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 : 22

EOCYPRAEIDAE SCHILDER, 1924 A

Remarks— Based on protoconch, teloconch, and shell morphology, Fehse (2013, 2021) demonstrated that the Eocypraeidae should not be considered a subfamily within the Ovulidae . Eocypraeidae comprises the subfamilies Eocypraeinae and Sulcocypraeinae. The authors have chosen to adopt this classification scheme until aditional, more conclusive data become available. Lorenz and Fehse (2009), Lorenz (2018), Pacaud (2018b), and Fehse (2021) all noted that this family is living today based on the presumption that Sphaerocypraea incomparabilis ( Briano, 1993) [originally described as Chimaeria incomparabilis ] is correctly placed. Indeed Briano’s species outwardly resembles members of Sphaerocypraea , but until conclusive molecular data and/or radular data can be obtained, thus affording correct systematic placment, it should be tentatively considered a living member of Sphaerocypraea .