Cassis postmamillaris Sacco, 1890

Kovács, Zoltán & Vicián, Zoltán, 2017, Middle Miocene Tonnoidea and Ficoidea (Caenogastropoda) assemblages from Letkés (Hungary), Fragmenta Palaeontologica Hungarica 34, pp. 75-104 : 78-79

Cassis postmamillaris Sacco, 1890

(Figs 6–9)

1890 Cassis postmamillaris Sacco – SACCO, p. 16, pl. 1, fig. 11.

2013 Cassis postmamillaris Sacco – LANDAU et al., p. 123, pl. 17, figs 2–4, pl. 79, fig. 8 (cum syn.). 2017 Cassis postmamillaris Sacco – VICIÁN et al., p. 267, pl. 1, figs 13–14.

Material – 167 specimens (SL 10–83); HNHM: INV 2017.664 . (Figs 6–9), INV 2017.665. (14) , 152 specimens in private collections.

Description – Large, helmet-shaped shell, low spire, last whorl more than 90% of the total height, constricted at base. Elongate aperture, thickened, denticulate outer lip, columella with folds, broad, flattened, thickened parietal callus forming triangular apertural shield, deep, recurved siphonal canal. Spiral sculpture of two or three rows of rounded, slightly pointed tubercles, axial sculpture of weakly developed ribs and growth lines.

Remarks – Although the Oligocene C. mamillaris Grateloup was distinguished from the Miocene C. postmamillaris by SACCO (1890), it was overlooked in the Hungarian literature, and the Miocene species was recorded as C. mamillaris from the N Börzsöny and E Cserhát Mts ( NOSZKY 1925, 1940). C. postmamillaris is relatively abundant in the mollusc assemblage studied here.

Distribution – Langhian: PMS ( Italy), Badenian: CP ( Austria, Czech Republic, Hungary, Romania, Slovakia), Serravallian: PMS ( Greece, Turkey). Tortonian: PMS ( Italy).