Bursa scrobilator ( Linnaeus, 1758 )

Kovács, Zoltán & Vicián, Zoltán, 2017, Middle Miocene Tonnoidea and Ficoidea (Caenogastropoda) assemblages from Letkés (Hungary), Fragmenta Palaeontologica Hungarica 34, pp. 75-104 : 93

Bursa scrobilator ( Linnaeus, 1758)

(Figs 46–47)

1758 Murex scrobilator – LINNAEUS, p. 749.

1969 a Bursa (Ranella) nodosa subnodosa Sacco – CSEPREGHY-MEZNERICS, p. 81, pl. 3, figs 6, 8. 2009 Bursa scrobilator (Linnaeus) – LANDAU et al., p. 75, pl. 7, figs 10–11 (cum syn.).

Material – Three specimens (SL 18–22); HNHM: INV 2017.684 . (Figs 46– 47) , two specimens in private collections.

Description – Fusiform shell, elevated spire, protoconch of three smooth, convex whorls, four subangulate teleoconch whorls, convex last whorl 70% of the total height, constricted at the base. Ovate aperture, convex, denticulate outer lip thickened by labral varix, short anal canal, short, slightly recurved siphonal canal, slightly concave, plicate columella. Spiral sculpture of narrow cords, three fine nodular rows on the sutural ramp, nodulose shoulder, two fine primary nodular rows below shoulder on the last whorl, axial sculpture of two prominent varices per whorl.

Remarks – The high diversity of genus Bursa in the studied assemblage is remarkable: all three species known from the Paratethys occur at Letkés. The specimen figured here represents the “ nodosa ” form which was typical of the Miocene Paratethys.

Distribution – Badenian: CP ( Austria, Hungary, Poland), Tortonian: PMS ( Italy), NEA ( France). For Pliocene-Pleistocene range of the “ nodosa ” form see LANDAU et al. (2004).