Acteonidae, Bullinidae and Ringiculidae (Gastropoda: Heterobranchia) from the Plio-Pleistocene of the Philippines Author Helwerda, Renate A. text Zootaxa 2015 3990 2 197 220 journal article 10.11646/zootaxa.3990.2.2 1740ec81-c55e-44ce-9a6d-cd62acd5d898 1175-5326 242947 BDF1BC11-4848-4858-99DC-0336A5FBEE2B Ringicula cf. spec 1 ( Figure 26 ) Material. Tiep2 (1) RGM 961.817. Characterization. Shell medium-sized; H 4.10 mm , W 3.18 mm; protoconch slightly elevated, 1.1 whorl, DP 0.27 mm ; nucleus moderately small, DN 0.16 mm ; teleoconch with distinct subsutural ridge and groove; additional sculpture of 11 irregularly spaced spiral grooves on the body whorl; lip not crenulated; thin parietal callus with nearly obsolete lamella; posterior sinus rather shallow. Remarks. See remarks at Ringicula spec 1.