CYPRAEIDAE, Rafinesque, 1815

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

CYPRAEIDAE , GENUS AND SPECIES INDETERMINATE

FIGS. 7A–C

Gisortia sp. cf. G. clarki Ingram, 1940 . Smith, 1975. p. 469, 479, pl. 2, figs.9, 13. Not Gisortia clarki Ingram, 1940 .

Referred Specimens—Hypotype (of Smith, 1975) ( Figs. 7A–C ) CASG 61666.06 [ex LSJU 10235 of Gisortia sp. cf. G. clarki ], length 39 mm length, width 25 mm width, height 22 mm, CASG Locality 61666 [ex LSJU Locality 2073, = UCMP Locality A-9717], Tumey Hills, Fresno County, middle California.

Occurrence— Basal Lodo Formation, Paleocene (Thanetian Stage).

Remarks— This medium-size gastropod is represented by a single specimen, which is too poorly preserved to be positively assigned to a genus or species. The specimen is an internal mold, is missing its right posterior end, and the aperture is filled with matrix. The general shape of this specimen resembles superficially the specimens of Protocypraea ? sp. 2 also from the Lodo Formation.

Figures

Figure 7A–C. Cypraeidae, genus and species indeterminate, Lodo Formation (basal) (Paleocene, Seldanian Stage), Tumey Hills, Fresno County, central California. Basal (A), dorsal (B), and right (labral) (C) views, 1.3x, length 39 mm, width 25 mm, height 22 mm, of hypotype CASG 61666.06, CASG Locality 61666. D–F. Eocypraea batequensis (Groves, 2011), Bateque Formation (Eocene, “Capay Stage”), Mesa La Salina, Baja California Sur, México. Basal (D), dorsal (E), and right (labral) (F) views, 4.8x, length 9.4 mm, width 6.5 mm, height 5.1 mm, of holotype IGM 5174, LACMIP Locality 16951 [ex CSUN Locality1220b]. G–I. Eocypraea crescentensis (Groves, 2011), Crescent Formation (Eocene, “Capay Stage”), Larch Mountain, Black Hills area, Thurston County, Washington. Basal (G), dorsal (H), and left (columellar) (I) views, 3.9x, length 10.9 mm, width 7.6 mm, height 6.1 mm, of holotype LACMIP 16655.40, LACMIP Type 13646, LACMIP Locality 16655 [= LACMIP Locality 41563; ex CSUN Locality 1563]. J–L. Eocypraea jimgoederti (Groves, 2011), lower McIntosh Formation (middle Eocene, “Transition Stage” to “Tejon Stage”), Doty Hills, Lewis County, Washington. Basal (J), dorsal (K), and left (columellar) side (L) views, 3.5x, length 12.7 mm, width 8.2 mm, height 6.9 mm, of holotype LACMIP 41573.1, LACMIP Type 13647, LACMIP Locality 41573 [ex CSUN Locality 1573]. M–O. Eocypraea judithsmithae n. sp., Llajas Formation (Eocene, “Domengine Stage”), north side Simi Valley, Ventura County, southern California. Basal (M), dorsal (N), and left (labral) (O) views, 1.5x, length 26.6 mm, width 18.4 mm, height 12.6 mm, of holotype LACMIP 40372.1, LACMIP Type 14940 (LACMIP Locality 40732).