Trivia coccinelloides (J. de C. Sowerby, 1822)

Trivia coccinelloides (J. de C. Sowerby, 1822) View in CoL ( Fig. 10H View FIG 1 View FIG , H 2 View FIG , I 1 View FIG , I 2 View FIG , J 1 View FIG , J 2 View FIG )

Cypraea coccinelloides J. Sowerby, 1822: 107 , pl. 378, fig. 1.

Trivia coccinelloides View in CoL – Fehse & Landau 2003: 87, fig. 1/1a-c. — Landau et al. 2011: 17, pl. 6, fig. 8. — Van Dingenen et al. 2016: 123, pl. 4, fig. 5. — Van Nieulande et al. 2022: 20, figs 18-22.

For more, see synonymy list in Fehse & Landau (2003).

MATERIAL AND DIMENSIONS. — Maximum height 12.4 mm, width 9.1 mm. — RGM.1365271 (1), leg. WG ; RGM.1365272 (1), leg. WG ; RGM.1365003 (42), leg. ACJ ; RGM.1365322 (17), leg. AWJ ; RGM.1365203 (1), leg. WG ; RGM.1365320 (4), leg. WG ; RGM.1365274 (8), leg. ACJ ; RGM.1365275 (3), leg. AWJ ; RGM.1365321 (3), leg. AWJ ; RGM.1365057 (20), leg. WG ; RGM.1365323 (18), leg. AWJ ; RGM.1365105 (239), leg. AWJ .

SPECIES CHARACTERISATION. — Aperture well to the right of the ventral mid-line, the fossula not delimited from the columella and the inner border of the columella; fossula not covered by outer lip when seen in ventral view.

DISTRIBUTION. — Lower Pliocene: NSB, Coralline Crag, England ( Wood 1848; Harmer 1920); Atlantic, NW France ( Van Dingenen et al. 2016); S Spain ( Landau et al. 2011). — Upper Pliocene: NSB, Red Crag, England ( Wood 1848; Harmer 1920), Lillo Formation, Belgium (Glibert 1958; Marquet 1998); Atlantic, Portugal ( Silva 2001); western Mediterranean, Spain ( Fehse & Landau 2003); central Mediterranean, Italy ( Sacco 1894). — Upper Pliocene-Pleistocene: NW France ( Brébion 1964). — Lower Pleistocene: Atlantic, Selsoif, France (this paper).

REMARKS

The species varies slightly in the development of the dorsal hump, and in the number of dorsal ribs and labial teeth. This same variability is seen in the Selsoif material, where this species is abundant. We consider this to be the only Trivia species present in the Selsoif assemblage. For further discussion see Van Dingenen et al. (2016: 123) and Van Nieulande et al. (2022: 20).