Eunaticina martingrossi, Harzhauser & Landau & Guzhov, 2025

Eunaticina martingrossi nov. nom.

Figs 58A–B View FIGURE 58

* Natica Hoernesi Hilb.— Hilber 1879: 447 View in CoL , pl. 5, figs 5–c [ non Fischer & Tournouër, 1873].

Sigaretus suturalis Ch. View in CoL May.— Boettger 1902: 84 [ non Eunaticina suturalis ( Mayer 1864) = Eunaticina striatella ( Grateloup, 1828) View in CoL ].

Sinum ( Sigaretotrema) michaudi ( Michelotti 1847) —Kojumdgieva in Kojumdgieva & Strachimirov 1960: 122, pl. 34, fig. 1 [ non Sigaretotrema michaudi ( Michelotti, 1847) View in CoL ].

Eunaticina striatella ( Grateloup, 1828) View in CoL — Moreno et al. 2003: 146, figs 44, 45 [ non Eunaticina striatella ( Grateloup, 1828) View in CoL ].

Type material. The holotype described by Hilber (1879) from Pöls ( Austria) is lost, SL: 15 mm, MD: 11 mm. Herein we designate a neotype: UMJG&P 60782, SL: 11.8 mm, MD: 9.4 mm, Wetzelsdorf ( Austria), Figs 58B View FIGURE 58 1 –B View FIGURE 1 4 View FIGURE 4 .

Illustrated material. UMJG&P 60782, SL: 12.2 mm, MD: 9.7 mm, Wetzelsdorf ( Austria), Figs 58A View FIGURE 58 1 –A View FIGURE 1 4 View FIGURE 4 .

Etymology. In honor of Martin Gross, paleontologist at the Universalmuseum Joanneum in Graz ( Austria) in recognition of his contributions to Miocene paleontology.

Revised description. Small, fragile, ovate shell with acute, conical spire, higher than wide (SL/MD = ~1.3); apical angle 97–105°. Protoconch unknown. Suture linear, narrowly canaliculate. Teleoconch of about four whorls with wide, weakly convex subsutural ramp passing into convex periphery without angulation. Periphery placed mid-whorl (~49%). Last whorl weakly expanding, attaining ~85% of total height, moderately convex below periphery. Growth lines distinct and weakly prosocyrt in apical view, prosocline and weakening towards periphery. Spiral sculpture of broad, flat cords, separated by shallow, narrow grooves. Spiral cords indistinct along periphery, most prominent over base. Aperture ovate, moderately wide with acute adapical tip, placed distinctly above mid-whorl (~86%). Aperture attaining ~75% of total height. Columellar lip weak, basal lip and outer lip thin. Columellar angle ~15°. Opercular ridge in outer lip not developed. Umbilicus moderately wide (~16%), deep with prominent growth lines and broad spiral cords. Parietal callus short (~20%), weakly thickened, narrow. Anterior lobe of parietal callus weak. Funicle absent. Basal fasciole weak, rounded with prominent growth lines and broad spiral cords. No color pattern preserved.

Discussion. Natica hoernesi Hilber 1879 is a junior homonym of Natica hoernesi Fischer & Tournouër, 1873 . Therefore, we propose Eunaticina martingrossi as replacement name. Eunaticina striatella ( Grateloup, 1828) , from the Early Miocene of the Aquitaine Basin ( France), differs in its much more depressed shell, wider aperture and wider umbilicus ( Cossmann & Peyrot 1919: pl. 12 figs 49–50; Lozouet et al. 2001: pl. 18, fig. 5). A moderately preserved specimen described as Eunaticina striatella by Moreno et al. (2003) from the Middle Miocene of Spain seems to be conspecific with the Paratethyan species, suggesting a wider geographic distribution of this rare species. Eunaticina sp. from the Eocene of Cava Albanello ( Italy), illustrated in Robba et al. (2016: pl. 7, fig. 8), differs in its lower spire and more globose outline.

Paleoecology. Coastal marine, lagoonal.

Distribution in Central Paratethys. Badenian (Middle Miocene): Styrian Basin: Pöls, Wetzelsdorf ( Austria) ( Hilber 1879; hoc opus). Făget Basin: Coşteiu de Sus ( Romania) ( Boettger 1902). Dacian Basin: Trifonovo ( Bulgaria) (Kojumdgieva in Kojumdgieva & Strachimirov 1960).

Proto-Mediterranean Sea. Langhian (Middle Miocene): Sant Llorenç d’Hortons region: La Pedrera ( Spain)

( Moreno et al. 2003).

Genus Sigaretotrema Sacco, 1890 View in CoL

Type species. Sigaretus michaudi Michelotti, 1847 View in CoL ; by monotypy ( Sacco 1890: 38). Early Miocene, Italy.