Turricula sp.

Kiel, Steffen, Sami, Marco & Taviani, Marco, 2023, Mollusks (Gastropoda, Bivalvia) from Miocene cold-seep deposits in northern Italy: revisions and additions, European Journal of Taxonomy 910, pp. 115-160 : 137-138

Turricula sp.

Fig. 7H–I

Turricula sp. – Sami & Tabanelli 2013: 17–18, fig. 1.

Material examined

ITALY – Emilia-Romagna • 1 spec.; Ca’ Piantè; MSF 1081 (H = 32.4 mm) .

Description

Tall, slender, fusiform shell, at least seven whorls with strong subsutural collar and incision, sinus in growth lines within this incision; about 8–10 thick axial ribs per whorl, starting below subsutural incision, crossed by four fine, evenly spaced spiral cords; aperture elongate lens-shaped with long, straight siphonal canal, inner lip callus-covered; transition from flank of last whorl to base sinuous and smooth, axial ribs fade on base, spiral sculpture of last whorl continuous onto base.

Remarks

Sami & Tabanelli (2013) noted that this specimen is quite similar to the Miocene Surcula consobrina Bellardi, 1877 . The syntype of Surcula consobrina ( Bellardi 1877) illustrated by Ferrero Mortara et al. (1981: 65, pl. 10 fig. 2) and specimens identified as Turricula (Surcula) consobrina ( Bellardi, 1877) from the Middle Miocene of Poland ( Bałuk 2003: pl. 14 fig. 3) have weaker and more numerous spiral cords, and a shorter siphonal canal than the specimen reported here. Clavatula (Surcula) consobrina badensis from the Middle Miocene of Hungary ( Csepreghy-Meznerics 1953) has a shorter siphonal canal.

Stratigraphic and geographic range

Upper Miocene, northern Italy.

Figures

Fig. 7. Neogastropoda Wenz, 1938 and Heterobranchia Burmeister, 1837 from Miocene Calcari a Lucina seep deposits in northern Italy. A–C. The eosiphonid Eosipho hoernesi (Bellardi, 1872). A–B. Specimen with well-preserved aperture, from Ca’ Piantè (MSF 1070). C. Specimen showing details of spiral ornament, from Ca’ Rovereti (NRM Mo 204839). D. The buccinid Neptunea? sp. from Le Colline (MSF 2359). E–F. The olivid Olivella longispira Bellardi, 1882. E. From Le Colline (MSF 1202). F. From Guzzano (MGGC 22310). G. The turrid Turris citima (Bellardi, 1877), from Ca’ Cavalmagra (MSF 1307). H–I. The turrid Turricula sp., from Ca’ Piantè (MSF 1081). J. The pyramidellid (Heterobranchia) Turbonilla sp., from Ca’ Cavalmagra (MSF 1305).