Provanna antiqua Squires, 1995

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 : 124

Provanna antiqua Squires, 1995

Fig. 14 .

1995 Provanna n. sp.; Goedert and Campbell 1995: figs. 4–7.

1995 Provanna antiqua sp. nov.; Squires 1995: 32, figs. 3–18.

2006 Provanna antiqua Squires 1995 ; Kiel 2006: 125, figs. 5.1– 5.8. 2006 Provanna antiqua Squires 1995 ; Kiel and Goedert 2006a: fig. 2C.

Material.— Eight specimens ( NRM Mo187044–187051) and numerous unnumbered specimens from Cerro La Salina blocks 1, 4, 6, 8, 9; one unnumbered specimen from the Belén site. All upper Oligocene, Talara Basin, Peru .

Remarks.—We cannot see any differences between the Peruvian specimens from the La Salina sites and those described from late Eocene to Oligocene seep deposits in western Washington, USA ( Goedert and Campbell 1995; Squires 1995; Peckmann et al. 2002). The extant West African P. chevallieri Warén and Bouchet, 2009 , is also virtually indistinguishable.

Stratigraphic and geographic range.—Late Eocene to Oligocene of western Washington state, USA; early Oligocene of the Talara Basin, northern Peru.

Figures

Fig. 14. The provannid gastropod Provanna antiqua Squires, 1995, from early Oligocene seep deposits at Cerro La Salina (block 1, A, F; block 4, H; block 6, B, C, D, G; block 8, E), Talara Basin, northern Peru. A. NRM Mo187044, specimen with distinctive axial and spiral sculpture, in abapertural view. B. NRM Mo187045, specimen with distinctive sculpture and showing the basal groove, in apertural view.C. NRM Mo187046, specimen with weak axial sculpture in the upper whorl, in apertural view. D. NRM Mo187047, fragmentary specimen with mainly spiral sculpture, in apertural view. E. NRM Mo187048, nearly smooth specimen showing slightly sinuous growth lines, in apertural view. F. NRM Mo187049, specimen with small shoulder and sculpture mainly in upper part of whorls, in apertural view.G. NRM Mo187050, specimen with faint axial and spiral sculpture, in apertural view. H. NRM Mo187051, two specimens with small shoulder and sculpture mainly in upper part of whorls..