Eocypraea undetermined So CA
Creators: name: Groves, Lindsey
name: Squires, Richard L.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Eocypraeidae
Eocypraea
Eocypraea undetermined

description: EOCYPRAEA SP. CF. E. INFLATA (LAMARCK, 1802)
FIGS. 8G–I
Eocypraea castacensis (Stewart, 1926 [1927]). Vokes, 1939, p. 154 [in part], pl. 20, fig. 14 [not fig. 9, = Bernaya kaylinae n. sp.].
Cypraea castacensis (Stewart). Ingram, 1942. p. 103 [in part], pl. 8, fig. 6 [not fig. 5, = Bernaya kaylinae n. sp.].
Eocypraea (Eocypraea) moumieti Dolin and Dolin, 1983. p. 36. Groves, 1997. p. 8. Not Eocypraea moumieti Dolin and Dolin, 1983. Not Eocypraea inflata var. moumieti Dolin and Dolin, 1983. p. 46.
Eocypraea (Eocypraea) sp. cf. E. (E.) inflata (Lamarck, 1802). Groves, 2011. p. 50, figs. 11, 12. Groves and Squires, 2021. p. 231.
Referred Specimen—Hypotype (of Vokes, 1939, of Ingram, 1942, of Groves, 2011) UCMP 15815 (Figs. 8G–I), length 27.3, width 18.7 mm, height 15.1, UCMP Locality A-1282.
Occurrence— Domengine Formation, middle Eocene, Reef Ridge, Fresno County, central California.
Etymology— Originally from Latin inflata for the highly inflated shell.
Remarks— The hypotype of Vokes (1939), Ingram (1942), and Groves (2011) most closely resembles Eocypraea inflata (Lamarck, 1802) from middle Eocene (Lutetion/Bartonian) strata of France, Belgium, and England. This is particularly evident from the illustrations of Cossmann (1903: pl. 9, figs. 18, 19), Cossmann and Pissaro (1911: pl. 32, fig. 162-7), and Wenz (1941: fig. 2882). It superficially resembles Luponovula maniobraensis (Squires and Advocate, 1986) from the lower Eocene (“Capay Stage”) Maniobra Formation of Riverside County, southern California. Luponovula maniobraensis is more elongate, has coarser dentition, has a prominent basal callus, and is larger than Eocypraea sp. cf. E. inflata.
Dolin and Dolin (1983: p. 37, table on p. 46 [as Eocypraea inflata var. moumieti]) reported Eocypraea moumieti Dolin and Dolin, 1983, which is known from the Gan Basin, Pyrénées Atlantique Department, France, as also occurring in California. They reported that this California occurrence is questionably “ castacensis ” Vokes, 1939, but Vokes was not the author of castacensis. That particular specimen (hypotype UCMP 33808 of Vokes, 1939) is now Bernaya kaylinae n. sp. In summary, E. sp., cf. E. inflata (Lamarck, 1802) occurs very rarely in the NEP region, whereas E. moumieti Dolin and Dolin, 1983 does not occur in this region.
Perrilliat et al. (2003: p. 48, pl. 2, figs. 33, 34) reported a specimen of a middle Eocene cypraeoidean as E. (E.) inflata (Lamarck, 1802) [hypotype IHN 6736] from the San Juan Formation, Chiapas, southern México. Unfortunately, this specimen is too poorly preserved to afford a positive identification.
description: Published as part of 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, pp. 1-52 in PaleoBios 40 (10) on page 27, DOI: 10.5070/P9401057774, http://zenodo.org/record/10913295