Euspira sirenkoi Pedriali, Sosso & Dell’Angelo, 2019

Euspira sirenkoi Pedriali, Sosso & Dell’Angelo, 2019 View in CoL

Figs 45A View FIGURE 45 1 –A View FIGURE 1 4 View FIGURE 4

Euspira catena helicina (Brocchi) View in CoL — Tejkal et al. 1967 199, pl. 10B, figs 12–14 [ non Euspira helicina ( Brocchi, 1814) View in CoL ].

* Euspira sirenkoi View in CoL sp. nov. — Pedriali et al. 2019: 175 View Cited Treatment , figs 28.1−4.

Type material. Holotype: MPUM 11744, SL: 16.7 mm, MD: 12.2 mm, Varivtsi ( Ukraine), illustrated in Pedriali et al. (2019: 28.1a–b), Figs 45A View FIGURE 45 1 –A View FIGURE 1 4 View FIGURE 4 . Paratype: MZB 32150, SL: 9.9 mm, MD: 7.7 mm, Varivtsi ( Ukraine), illustrated in Pedriali et al. (2019: 28.12a–b). For additional paratypes see Pedriali et al. (2019).

Description. See Pedriali et al. (2019: 175).

Discussion. Euspira sirenkoi Pedriali, Sosso & Dell’Angelo, 2019 is close to Euspira protracta ( Eichwald, 1830) due to its elongate ovate shell but differs in its conical spire with less convex whorls, the more prominent anterior lobe, which obscures most of the umbilicus. This species was described from late Badenian of the Ukrainian Fore-Carpathian Basin and we assume that it is part of the endemic radiation of gastropods in this region ( Harzhauser et al. 2024). Nevertheless, specimens from the Karpatian of Slovakia described by Tejkal et al. (1967) are strikingly similar and might represent an additional stratigraphically older occurrence.

Paleoecology. Shallow marine, inner neritic.

Distribution in Central Paratethys. Karpatian (Early Miocene): Slovakian Basin: Ďurkovce, Dolné Príbelce ( Slovakia) ( Tejkal et al. 1967). Badenian (Middle Miocene): Ukrainian Fore-Carpathian Basin: Varivtsi (Khmel’nytskyi Region, Ukraine) ( Pedriali et al. 2019).