Pseudophopsis peruviana ( Olsson, 1931 )

Kiel, Steffen, Hybertsen, Frida, Hyžný, Matúš & Klompmaker, Adiël A., 2020, Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru, Acta Palaeontologica Polonica 65 (1), pp. 109-138 : 114

Pseudophopsis peruviana ( Olsson, 1931)

Fig. 3.

1931 Pleurophopsis peruviana sp. nov.; Olsson 1931: 43–44, pl. 4: 1, 3.

Material.— One specimen (in two parts: NRM Mo187027 and NRM Mo187028) from Cerro La Salina block 1; two unnumbered specimens from Cerro La Salina block 3; several unnumbered fragments from Cerros El Pelado block 2, and several specimens (including USNM PAL 530294 , 530294 , 728207–728209 ) collected by Axel A. Olsson and Wendell P. Woodring at USGS loc. 21219. All upper Oligocene , Talara Basin, Peru. The shells reach 10 cm in length .

Remarks.—The Eocene Cuban Pseudophopsis bitumen Cooke, 1919 ) has a hinge dentition that is quite similar that of small specimens of Pseudophopsis peruviana (see Kiel and Peckmann 2007: figs. 4A, B). Pseudophopsis bitumen differs from P. peruviana by having the maximum inflation in the middle, whereas it is located toward the anterior in P. peruviana .

Stratigraphic and geographic range.—Early Oligocene of the Talara Basin, northern Peru.