Nitidiscala connexicosta, Harzhauser & Landau, 2025

Harzhauser, Mathias & Landau, Bernard M., 2025, The Epitoniidae (Gastropoda, Epitonioidea) of the Miocene Central Paratethys Sea-an overwhelming diversity, Zootaxa 5630 (1), pp. 1-142 : 98-99

publication ID	https://doi.org/10.11646/zootaxa.5630.1.1
publication LSID	lsid:zoobank.org:pub:89462472-D932-4255-880F-C6EF15220A31
persistent identifier	https://treatment.plazi.org/id/03D787A4-FF84-FF86-FF3F-FA82FD2997F9
treatment provided by	Plazi
scientific name	Nitidiscala connexicosta
status	sp. nov.

Treatment

Nitidiscala connexicosta sp. nov.

Figs 4J View FIGURE 4 , 33K View FIGURE 33 , 37B View FIGURE 37 1 –B View FIGURE 1 2 View FIGURE 2

Type material. Holotype, NHMW 2024 View Materials /0284/0002, SL: 3.4 mm, MD: 1.9 mm, Hrušovany nad Jevišovkou ( Czech Republic), Figs 4J View FIGURE 4 , 33K View FIGURE 33 , 37B View FIGURE 37 1 –B View FIGURE 1 2 View FIGURE 2 .

Type locality. Hrušovany nad Jevišovkou ( Czech Republic), Carpathian Foreland Basin .

Type stratum. Middle Badenian silt and sand.

Age. Middle Miocene, middle Badenian (Langhian).

Etymology. Referring to the axial ribs, which are obliquely aligned axially along the teleoconch.

Diagnosis. Very small, moderately broad, stocky shell with strongly convex whorls, deeply impressed suture and strongly raised, widely spaced, weakly prosocline lamellae, obliquely aligned axially, indented along suture.

Description. Shell very small, moderately broad, stocky (apical angle ~33°). Protoconch and early teleoconch whorls unknown. Teleoconch whorls strongly convex with periphery placed mid-whorl. Suture deeply impressed, weakly undulating. Sculpture of moderately close-set, thin, strongly raised, weakly prosocline lamellae, obliquely aligned axially (?: 10: 11), crests only slightly rolled over. Interspaces smooth, glossy. Last whorl slightly widening, roughly attaining half of the total height (apex is missing), moderately convex with nearly subcylindrical periphery, no peribasal cord but lamellae slightly angled at transition to base, lamellae grading into prominent, relatively broad ribs terminating at columellar callus, base weakly convex. Fasciole very short, broad with prominent growth lines. Aperture ovate, columella weakly concave. Outer lip strongly thickened by varix. Columellar callus forming broad rim, attached to base, parietal callus delicate. Peristome duplex. No umbilicus.

Discussion. ‘Epitonium’ subscalare (d’Orbigny, 1852), from the Early Miocene of France, has a higher spire and thinner orthocline varices (see Cossmann & Peyrot 1922: pl. 4, figs 39–40; Lozouet et al. 2001: pl. 19, fig. 5). Nitidiscala baluki sp. nov. is stockier and has a larger, more inflated last whorl. Nitidiscala baluki is smaller than N. connexicosta and has slightly fewer lamellae.

Paleoenvironment. Unknown.

Distribution in Central Paratethys. Badenian (Middle Miocene): Carpathian Foreland Basin: Hrušovany nad Jevišovkou ( Czech Republic) (hoc opus).