Cancilla wagreichi, Harzhauser & Landau, 2021

Harzhauser, Mathias & Landau, Bernard, 2021, The Mitridae (Gastropoda: Neogastropoda) of the Miocene Paratethys Sea, Zootaxa 4983 (3), pp. 1-72 : 62

publication ID	https://doi.org/ 10.11646/zootaxa.4983.1.1
publication LSID	lsid:zoobank.org:pub:6A4778D6-195A-4AB1-AA1E-7D8000185B28
DOI	https://doi.org/10.5281/zenodo.5044098
persistent identifier	https://treatment.plazi.org/id/A82A87E9-8A2B-3870-FF4D-FE0CFE0EF8A6
treatment provided by	Plazi
scientific name	Cancilla wagreichi
status	sp. nov.

Treatment

Cancilla wagreichi View in CoL nov. sp.

Figs 15A View FIGURE 15 1 –A View FIGURE 1 2 View FIGURE 2

[ Mitra ] tenuistria Duj. —Hoernes 1880: 125 [non Dujardin, 1837].

Mitra tenuistria Duj. — Hoernes & Auinger 1880: 80, pl. 9, figs 8a–b [non Dujardin, 1837].

Type material. Holotype: NHMW 2020 View Materials /0130/0001, SL: 29.3 mm, MD: 8.7 mm, Lăpugiu de Sus ( Romania), illustrated in Hoernes & Auinger 1880, pl. 9, figs 8a–b, Figs 15A View FIGURE 15 1 –A View FIGURE 1 2 View FIGURE 2 .

Type locality. Lăpugiu de Sus ( Romania), Făget Basin .

Type stratum. Silt and clay of the Dej Formation.

Age. Middle Miocene, early/middle Badenian (Langhian).

Etymology. In honour of Michael Wagreich (University Vienna), in respect for his contributions on Paratethyan stratigraphy.

Diagnosis. Cancilla species of medium size, slender fusiform profile, with moderately high spire, weakly convex whorls, elongate last whorl with shallow basal concavity, twisted siphonal canal, and delicate spiral sculpture of numerous flattish spiral cords.

Description. Shell medium sized, slender fusiform. Protoconch and early teleoconch unknown. Spire whorls weakly convex, with periphery in abapical third; suture narrowly incised. Last whorl elongate, evenly convex, slowly contracting into moderately long base. Sculpture consisting of six to seven broad spiral cords, with flat tops on early spire whorls. Number of cords increases to about 22 on penultimate whorl by intercalation of secondary spiral grooves. Spiral sculpture persists on last whorl, being most prominent below adapical suture and on base, but slightly blurred along periphery. Aperture elongate, columellar callus indistinct. Columella with four delicate columellar folds; outer lip thin. Fasciole weakly swollen. Siphonal canal short, moderately wide, weakly twisted.

Shell measurements and ratios. SL = 29.3 mm, MD: 8.7 mm; AA = 33°, SL/MD: 3.4, AL/AW: 4.7.

Discussion. The specimen from Lăpugiu de Sus was identified by Hoernes & Auinger (1880) as Mitra tenuistria Dujardin, 1837 , originally described from the middle Miocene of the Touraine ( France). The French species, however, is readily distinguished by its broader shell and the distinctly broader and more prominent spiral cords (see Dujardin 1837, pl. 20, fig. 26; Peyrot 1938, pl. 4, figs 32, 40; Glibert 1952b, pl. 12 fig. 3). We are aware of few species that are comparable to the Paratethyan species: Mitra bellatula Bellardi, 1887 , from the late Miocene of Stazzano ( Italy) has almost identical sculpture, but differs in its wider spire angle, broader last whorl and Mitrella -like shape (see Bellardi 1887a, pl. 4, fig. 2; Ferrero-Mortara et al. 1981, pl. 44, figs 7a–b). Mitra interposita Bellardi, 1887 (see Bellardi, 1887a, pl. 4, fig. 21; Ferrero-Mortara et al. 1981, pl. 49, figs 3a–b) is higher spired, has higher spire whorls, and coarser spiral sculpture. Mitra subuliformis Bellardi, 1887 , from the early Miocene of the Colli Torinesi ( Italy), is very similar in outline, but is smaller (SL = 20 mm), has a weaker fasciole and lacks the delicate spiral sculpture (see Bellardi 1887a, pl. 3, fig. 42; Ferrero-Mortara et al. 1981, pl. 46, figs 14a–b).

Palaeoenvironment. Unknown.

Distribution in Central Paratethys. Badenian (middle Miocene): Făget Basin: Lăpugiu de Sus ( Romania) ( Hoernes & Auinger 1880).