Hirtoscala ceruchus, 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 : 73

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-FFAD-FFAC-FF3F-FC33FD66913D
treatment provided by	Plazi
scientific name	Hirtoscala ceruchus
status	sp. nov.

Treatment

Hirtoscala ceruchus sp. nov.

Figs 27A View FIGURE 27 1 –A View FIGURE 1 2 View FIGURE 2 , 28A View FIGURE 28

Type material. Holotype, HH42f, Höbarth Museum , Horn ( Austria), SL: 8.0 mm, MD: 3.8 mm, Achberg at Maria Dreieichen ( Austria), Figs 27A View FIGURE 27 1 –A View FIGURE 1 2 View FIGURE 2 , 28A View FIGURE 28 .

Type locality. Achberg at Maria Dreieichen ( Austria), North Alpine Foreland Basin .

Type stratum. Loibersdorf Formation.

Age. Early Miocene, early Eggenburgian (Burdigalian).

Etymology. Ceruchus (Latin for rope), referring to the rope-like appearance of the lamellae; Noun in apposition.

Diagnosis. Shell small, slender, moderately convex teleoconch whorls with periphery below mid-whorl and widely spaced, very prominent lamellae, fused across suture and obliquely aligned axially, with strongly rolled over crests, fused across suture.

Description. Shell small, solid, slender (apical angle ~15°). Protoconch and first teleoconch whorls unknown. Teleoconch of moderately convex whorls with broad, steep, weakly convex subsutural shelf and convex periphery below mid-whorl. Suture deeply impressed, fenestrate. Sculpture of very prominent, widely spaced, weakly prosocline lamellae fused across suture, obliquely aligned axially (?: 8: 8), separated by wider interspaces. Crests of lamellae strongly rolled over. Interspaces between lamellae smooth. Last whorl attaining about 35% of total height, without basal angulation or peribasal cord. Lamellae strongly rolled over on base. Fasciole very short, broad, with prominent growth lines.Aperture ovate, columella weakly concave. Columellar callus and parietal callus continuous, columellar callus forming narrow rim, attached to fasciole. Peristome thickened, duplex. No umbilicus.

Discussion. This species co-occurs with Hirtoscala uncinata sp. nov. but differs clearly in its lamellae, which are fused across the suture and lack spines. Hirtoscala miofrondiculoides ( Sacco, 1891) is similar but is much larger and differs in its wider shell and more numerous lamellae.

Paleoenvironment. Shallow marine, inner neritic.

Distribution in Central Paratethys. Eggenburgian (Early Miocene): North Alpine Foreland Basin: Achberg at Maria Dreieichen ( Austria) ( Steininger et al. 1971).