Subepona, DOLIN AND LOzOUET, 2004

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 : 10

SUBEPONA DOLIN AND LOzOUET, 2004

Type Species— Subepona herrerensis Dolin and Lozouet, 2004 , by original designation (of Dolin and Lozouet, 2004: p. 59), Late Oligocene (Chattian) St. Paullès-Dax, Landes Department, France.

Diagnosis— Shell ovoid, smooth, and somewhat lowly to considerably inflated. Aperture mostly straight with stout teeth on both lips. Fossula trigonal, slightly convave, smooth like the columellar area, weakly but regularly convex. Ends of shell protrude. Extremities on both sides of exhalant canal rostrate (can be beaklike), with labrum (outer lip) extremity large and more curved relative to shorter and straighter columellar extremity. Slight depression associated with submerged spire. Terminal fold long, thin, extended, and bladelike. Siphonal canal long, wide,deep and clearly distinct from curve of shell margin. Marginal border on shell sides weak (mainly near ends of shell) ( Dolin and Lozouet 2004: p. 60).

Geologic Range— Lower Eocene (Ypresian) to upper Oligocene (Chattian) ( Dolin and Lozouet, 2004: p. 60).

Remarks— Pacaud and Vicián, 2018 reported Eopustularia Fehse, 2010 to be an obvious subjective synonym of Subepona . A fairly well preserved specimen ( SDSNH 169056) from the middle Eocene Scripps Formation, near Torrey Pines, San Diego County, California ( SDSNH Locality 7895) could only be identified as Subepona sp. as critical features are obscured.