Eocypraea takeosusukii, GROVES, 2011

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 : 26-27

publication ID	https://doi.org/ 10.5070/P9401057774
publication LSID	lsid:zoobank.org:pub:11600574-2B0E-4C13-BC08-A3A5EF9EE562
persistent identifier	https://treatment.plazi.org/id/921FD94C-FFC8-FFB4-FC04-FA29FE6DFBCF
treatment provided by	Felipe
scientific name	Eocypraea takeosusukii
status

Treatment

EOCYPRAEA TAKEOSUSUKII GROVES, 2011 View in CoL

FIGS. 8D–F

Eocypraea (Eocypraea) n. sp. Groves, 1997. p. 7 [as E. (E.) n. sp.].

Eocypraea (Eocypraea) takeosusukii Groves, 2011 . p. 46 (Table 1), 48, 49, figs. 3, 4. Groves and Squires, 2021. p. 232.

Eocypraea takeosusukii Groves. Fehse, 2021 View in CoL . p. 42.

Holotype and Type Locality— LACMIP 7045.1 , LAC- MIP Type 13645 (Figs. 8D–F), length 18.8 mm, width 14.4 mm, height 11.2 mm. LACMIP Locality 7045 (ex CIT Locality 1589), “Martinez Formation” (Thanetian Stage), east end of Lower Lake , Lake County, northern California.

Occurrence— Late Paleocene, “Martinez Formation,” Lower Lake area , Lake County, northern California .

Etymology— Originally named for the late Takeo Susuki [1920-2006] ( UCLA, Earth and Space Sciences Department).

Description— Shell small/medium size. Shell con- stricted anteriorly. Dorsum highly arched, maximum height and maximum width near center. Aperture slightly s-shaped, widens anteriorly, curves sharply toward colu- mella posteriorly. Denticulation semi-coarse with smooth interstices: outer lip with 16 teeth, inner lip with 11 teeth. Fossula smooth, wide. Posterior columella highly inflated. Anterior canal missing. Posterior canal deep. Anterior and posterior basal ridges slight and do not form basal calluses. Base rounded. (Groves 2011: p. 49).

Remarks— The holotype is the only known speci- men, and its preservation is moderately good. A poorly preserved specimen from LACMIP Locality 7047 [ex CIT Locality 868], Lower Lake area, Lake County, northern California ( LACMIP 7047.74, Type LACMIP 14929). “Mar- tinez Formation” may be this species. This fauna contains Turritella infragranulata Gabb, 1864 , in the Herndon Creek area, Lower Lake, Lake County, northern Califor- nia ( Stanton 1896) and Saul (1983: p. 102) confirmed Stanton’s (1896) report of this turritellid and assigned it to the Thanetian Stage.