Retiskenea sp.

Kiel, Steffen, Fernando, Allan Gil S., Magtoto, Clarence Y. & Kase, Tomoki, 2022, Mollusks from Miocene hydrocarbon-seep deposits in the Ilocos-Central Luzon Basin, Luzon Island, Philippines, Acta Palaeontologica Polonica 67 (4), pp. 917-947 : 934

Retiskenea sp.

Fig. 18C .

Material.— One specimen from block F ( NRM Mo 192540, W = 1.0 mm). Upper Miocene of the “shale quarry” within the Northern Cement Corporation quarry in Pangasinan province, Luzon, Philippines .

Remarks.—The single small specimen is embedded in matrix, blocking the view on the aperture and hence not allowing an identification to species level.

Figures

Fig. 18. Limpets, neomphalids, and vetigastropods from Upper Miocene seep deposits of the Amlang Formation in Pangasinan province, Luzon, Philippines. A, B. Unidentified limpet gastropod. A. NRM Mo 192715, small specimen, mostly an internal mold. B. NRM Mo 192656, large specimen with sculpture. C. The neomphalin Retiskenea sp., NRM Mo 192540, apical view on specimen embedded in rock matrix. D, E. The seguenzoid Cataegis sp. D. NRM Mo 192666; note sculpture on D2. E. NRM Mo 192665, specimen showing the strong spiral ribs, in apical (E1) and abapertual (E2) views. F. The colloniid Homalopoma sp., NRM Mo 192583, views on entire shell (F1–F3) and close-up on spiral sculpture (F4).