Spiralina alpinoligustica

Spiralina alpinoligustica (Sacco, 1892) (Fig. 14C 1-C 3) Pyrgulina turbonilloides var. alpinoligustica Sacco, 1892: 67, pl. 1, fig. 110. Spiralina alpinoligustica – Landau & Micali 2021: pl. 84, figs 1-6. For more, see synonymy list in Landau & Micali (2021). MATERIAL AND DIMENSIONS. — Maximum height 1.2 mm, width 0.6 mm. — RGM.1365024 (5), leg. ACJ; RGM.1365126 (450+), leg. AWJ; RGM.1365205 (1), leg. AWJ. SPECIES CHARACTERISATION. — Small turriform shell. Flat protoconch of one whorl. Teleoconch of 5 flat-sided whorls separated by canaliculated suture with 20 orthocline, axial ribs stopping at adapical cord. Base marked by weakened spiral cord. High, pyriform aperture with one tooth on the inner lip, at the level of a small umbilicus. DISTRIBUTION. — First occurences in the Upper Miocene from the Atlantic, NW France (Landau et al. 2020a). In the Lower Pliocene, only present in the Mediterranean of Italy (Sacco 1892; Ferrero Mortara et al. 1984; Crovato & Micali 1992a; Bogi & Chirli 2004; Chirli & Micali 2011). This species occurs in the Upper Pliocene from the Mediterranean of Estepona Basin, Spain (Landau & Micali 2021), Italy (Crovato & Micali 1992b; Ragaini & Bernieri 2007). Present in the Lower Pleistocene from the Mediterranean of Italy (Crovato & Micali 1992a) and Rhodes (Chirli & Linse 2011). Last fossil occurence in the Upper Pleistocene from Mediterranean, Italy (Crovato & Micali 1992a). Today this species occurs in the Atlantic from northwestern Spain (Trigo et al. 2018), south Portugal, Canaries (Hernández et al. 2011) to West Africa (Peñas & Rolán 1998; Van Aartsen et al. 2000; Peñas et al. 2014), and in the Mediterranean (Peñas et al. 1996; Giannuzzi-Savelli et al. 2014; Micali & Palazzi 1992; Öztürk et al. 2011) to the Black Sea (Nordsieck 1972; Wilke & Van Aartsen 1998).