Calliotropis

Helwerda, Renate Ariane, Wesselingh, Frank Pieter & Williams, Suzanne T., 2014, On some Vetigastropoda (Mollusca, Gastropoda) from the Plio-Pleistocene of the Philippines with descriptions of three new species, Zootaxa 3755 (2), pp. 101-135 : 117-119

Calliotropis spec. 2

( Figures 37–38 )

Material. Anda 1 (1); Anda 2 (1); Anda 3 (1).

Characterization. Shell low trochiform, H 2.0 mm, W 2.8 mm; P globular, slightly elevated, 1.2 whorls, DN 0.18; P/T boundary weak rib; sculpture of axial ribs and two weak spiral ribs, with spines at intersections which become stronger and hollow; upper spiral rib becomes acute; many small axial ribs below lower spiral rib; umbilicus wide, with distinct umbilical ridge, axial ribs with small spines inside.

Remarks. The studied specimens differ from C. bucina Vilvens, 2006 ( Reunion Island and Mayotte Island) and C. sagarinoi Poppe, Tagaro & Dekker, 2006 ( Philippines) by having a more angular keel and higher whorls.

Figures

FIGURES 33 – 38. Calliotropidae. 33. Calliotropis limbifera (Schepman, 1908). RGM 608.292. Locality AndaDeVos. (a) rear view, (b) apertural view, (c) apical view, (d) spire detail. 34. Calliotropis limbifera (Schepman, 1908). RGM 608.293. Locality AndaDeVos. SEM detail of protoconch. 35. Calliotropis spec. 1. RGM 608.296. Locality Anda 2. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 36. Calliotropis spec. 1. RGM 608.297. Locality Anda 4. SEM detail of protoconch. 37. Calliotropis spec. 2. RGM 608.301. Locality Anda 2. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 38. Calliotropis spec. 2. RGM 608.302. Locality Anda 3. SEM detail of protoconch.