Rissoina (Phosinella) steinabrunnensis Sacco 1895

TĂMAȘ A., TĂMAȘ D. M. & POPA M. V., 2013, Badenian Small Gastropods From Lăpugiu De Sus (Făget Basin, Romania). Rissoidae Family, Acta Palaeontologica Romaniae 9 (1), pp. 57-66 : 63

Rissoina (Phosinella) steinabrunnensis Sacco 1895

Fig. 3d

1895 Rissolina lamellosa var. Steinabrunnensis Sacc. – Sacco, 18, p. 37

1966 Rissoina (Phosinella) steinabrunnensis Sacco - Strausz, p. 80, pl. 12, fig. 15-18

1975 Rissoina (Phosinella) steinabrunnensis Sacco - Bałuk, p. 95, pl. 10, fig. 4,5

1981 Rissoina steinabrunnensis Sacco - Krach, p 52, pl. 15, fig. 27, 28

2006 Rissoina (Phosinella) steinabrunnensis Sacco - Bałuk, p. 189, pl. 4, fig. 1

Material: two specimens from L5 (one specimen PMBBU 23862 )

Description: Slender and elongated turriculated shell with about seven whorls; up to 4.20 mm in height and 1.90 mm in width. Protoconch consisting of about 2.5 convex whorls lacking ornamentation. Teleoconch with convex whorls and deep suture. Ornamentation consisting of prominent axial ribs, arched underneath the suture; this leads to an overall scalariform shell morphology. Fine spiral threads cross-cut the axial ribs. The last whorl represents about 55% of the total shell height. It is ornamented with 17 axial ribs intersected by 13 fine spiral threads, more pronounced towards the base. The oval aperture has an oblique orientation. Weakly incised anterior canal peristome and labrum with external varix.

Distribution: identified in: Poland ( Bałuk, 1975, 2006; Krach, 1981), Hungary ( Strausz, 1966).

Figures

Fig. 3 - a Alvania sp. b Manzonia (Manzonia) scalaris (Dubois, 1831). c Manzonia sp. d Rissoina (Phosinella) steinabrunnensis Sacco 1895. e Rissoina (Rissoina) vindobonensis Sacco, 1895. f Rissoina (Rissoina) pusilla (Brocchi, 1814).