Buccinidae, Rafinesque, 1815

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 : 128

Buccinidae indet.

Fig. 17C .

Material.— One specimen (NRM Mo187064, H = 7 mm) from the Belén seep site, upper Oligocene, Talara Basin, Peru. Remarks.—The specimen differs from Colus sekiuensis by its distinctive opisthocline axial ribs and its seemingly more convex whorl profile. Among the buccinids reported by Olsson (1931) from northern Peru, Cyrtochetus ? chiraensis Olsson, 1931, has an overall similar shape, but lacks distinctive axial ornament. Olsson’s Siphonalia species discussed above in the context of Colus sekiuensis differ from this species by their more angular whorl profile.

Figures

Fig. 17. Neogastropod and opisthobranch gastropods from early Oligocene seep deposits at Cerro La Salina (block 2, A; block 4, B; block 6, E; block 7, D) and Belén seep site (C), Talara Basin, northern Peru. A, B. The buccinid Colus sekiuensis Kiel and Goedert, 2007. A. Large specimen (NRM Mo187062), showing shape of last whorl. B. NRM Mo187063, fragment of an early whorl. C. Buccinidae indet. (NRM Mo187064), fragmentary specimen. D. NRM Mo187065, the opisthobranch “Acteon” sp. in apertural (D1) and lateral (D2) views. E. The opisthobranch Cylichna sp. (NRM Mo187066).