Bursa corrugata ( Perry, 1811 )

Kovács, Zoltán & Vicián, Zoltán, 2017, Middle Miocene Tonnoidea and Ficoidea (Caenogastropoda) assemblages from Letkés (Hungary), Fragmenta Palaeontologica Hungarica 34, pp. 75-104 : 94

Bursa corrugata ( Perry, 1811)

( Figs 50–54 )

1811 Biplex corrugata – PERRY, pl. 5, fig. 1.

2009 Bursa corrugata (Perry) – LANDAU et al., p. 77, pl. 8, figs 7–10, pl. 10, fig. 5 (cum syn.).

Material – 87 specimens (SL 10.5–28); HNHM: INV 2017.685 . ( Figs 52– 53 ), INV 2017.686. (9) , 77 specimens in private collections.

Description – Fusiform shell, elevated spire, protoconch of three smooth, convex whorls, four teleoconch whorls, angulate last whorl 78% of the total height, constricted at the base. Ovate aperture, denticulate outer lip thickened by labral varix, short, deep anal canal, short, recurved siphonal canal, straight, plicate columella, thickened columellar callus, short fasciole. Papillate surface, spiral sculpture of narrow cords, two rows of tubercles on the spire, four rows on the last whorl (strong tubercles of adapical row – 9 on the last whorl – form the shoulder), axial sculpture of two varices per whorl.

Remarks – Based on the revision of fossil and recent bursids, Bursa papillosa (Pusch) frequently recorded from the Paratethys was regarded as a junior synonym of B. corrugata by LANDAU et al. (2009). The species shows slight variability in the development of nodes. It is a new record in Hungary.

Distribution – Burdigalian: NEA ( France), PMS ( Italy), Badenian: CP ( Austria, Bulgaria, Hungary, Poland, Romania), Middle Miocene: WA ( Trinidad). For Pliocene-Recent range see LANDAU et al. (2009).

Figures

Figs 50–54. Bursa corrugata (Perry). – 50–51. Coll. TH, SL 23.5, MD 15.5 (2×), apertural and abapertural views. – 52–53. HNHM INV 2017.685., SL 23.5, MD 15 (2×), apertural and abapertural views. – 54. Coll. TH, SL 24, MD 16 (2×), abapertural view. – Figs 55–56. Aspa marginata (Gmelin). – 55. HNHM INV 2017.687., SL 33, MD 24 (1.2×), abapertural view. – 56. HNHM INV 2017.688., SL 38, MD 26 (1.2×), apertural view.– Figs 57–58. Distorsio cancellina (Lamarck), HNHM INV 2017.690., SL 41, MD 26 (1.5×), apertural and abapertural views