Claviscala norica Harzhauser & Landau, 2014

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 : 55-56

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-FFD3-FFD3-FF3F-FA3BFB3C90EC
treatment provided by	Plazi
scientific name	Claviscala norica Harzhauser & Landau, 2014
status

Treatment

Claviscala norica Harzhauser & Landau, 2014 View in CoL

Figs 20B–D View FIGURE 20 , 21B View FIGURE 21

* Claviscala norica Harzhauser & Landau View in CoL sp. nov. — Harzhauser et al. 2014: 94, pl. 4, figs 14–16.

Type material. Holotype, NHMW 2014 View Materials /0379/0058, SL: 23.0 mm, MD: 4.8 mm, Allerding ( Austria), illustrated in Harzhauser et al. (2014: pl. 4, fig. 14), Fig. 20B View FIGURE 20 . Paratype, NHMW 2014 View Materials /0379/0059, SL: 18.0 mm , MD: 4.8 mm, Allerding ( Austria), illustrated in Harzhauser et al. (2014: pl. 4, fig. 15), Figs 20C View FIGURE 20 , 21B View FIGURE 21 .

Illustrated material. NHMW 2014/0379/0060, SL: 27.0 mm, MD: 5.0 mm, Allerding ( Austria), illustrated in Harzhauser et al. (2014: pl. 4, fig. 16), Fig. 20D View FIGURE 20 .

Revised description. Medium-sized, slender shell (apical angle ~15°). Protoconch unknown. Teleoconch of at least 12 weakly convex to almost straight sided whorls. Suture narrow, weakly impressed. Narrow subsutural cord, steep, poorly delimited, faintly concave subsutural ramp, periphery placed about mid-whorl. Axial sculpture of broad, weakly prosocline, vague axial ribs separated by interspaces of about equal width (?: ~16: ~16), obliquely aligned axially, weakening over subsutural ramp, most prominent along periphery, terminating in prominent spiral cord at abapical suture. Faint spiral threads. Last whorl and aperture unknown.

Discussion. The available specimens are based on natural casts and silicone moulds. Therefore, the delicate spiral threads, typical for the type species Claviscala richardi ( Dautzenberg & de Boury, 1897) , are poorly preserved. The extant northern Atlantic and Mediterranean C. richardi is very similar but differs from the Ottnangian shell in its slightly broader and larger shell and more convex whorls (see Bouchet & Warén 1986: figs 1246–1247).

Paleoenvironment. Coastal marine, rocky shore.

Distribution in Central Paratethys. Ottnangian (Early Miocene): North Alpine Foreland Basin: Allerding ( Austria).

Genus Cylindriscala de Boury, 1909

Type species. Scalaria fulgens de Boury, 1909 View in CoL [= Cylindriscala acus ( Watson, 1883) View in CoL ], original designation by de Boury (1909a: 256). Present-day, Azores.

Diagnosis. “[…] tall, slender epitoniids with broad, not lamellar axial ribs and well defined basal disc; protoconch multispiral, smooth.” ( Bouchet & Warén 1986: 530).

Discussion. This genus displays a major radiation in the Atlantic with few additional species known from the Indo-West Pacific. All living species are deep water dwellers (Lima & Christoffersen 2012). Cylindriscala has not so far been reported from the Central Paratethys Sea, although it is represented by at least four species. Of these, especially Cylindriscala acus suggests a close relationship with the extant Atlantic fauna.