Fig. 14. The provannid gastropod Provanna antiqua Squires, 1995 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

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..