Anguloacrilla karamanensis, Harzhauser & Landau, 2025

Anguloacrilla karamanensis sp. nov. [not in Paratethys]

Figs 13A View FIGURE 13 1 –A View FIGURE 1 2 View FIGURE 2

Amaea (Acrilla) kimakowiczi ( Boettger, 1896) — Landau et al. 2013: 140, pl. 20, fig. 12 [non Anguloacrilla kimakowiczi ( Boettger, 1896) ].

Type material. Holotype, NHMW 1874 View Materials /0058/1129, SL: 31.7 mm, MD: 11.2 mm, Akpınar ( Turkey). Figs 13A View FIGURE 13 1 –A View FIGURE 1 2 View FIGURE 2 . Five paratypes NHMW 1847 View Materials /0058/1130.

Type locality. Akpınar ( Turkey), Karaman Basin .

Type stratum. Silt and clay of the Týrtar Formation.

Age. Middle Miocene, Serravallian.

Etymology. Referring to the city Karaman in Turkey.

Diagnosis. Very large, moderately slender, finely coronate shell with narrow, flat subsutural ramp, distinct shoulder angulation and numerous delicate lamellae, differing from congeners in its very weak spiral sculpture.

Description. Shell very large, moderately slender (apical angle ~22°), finely coronate. Protoconch unknown. Teleoconch of more than 11 relatively low whorls.Teleoconch whorls moderately convex with narrow, flat subsutural platform and distinctly angled shoulder, periphery placed mid-whorl. Sculpture of very numerous, thin, low, close-set, only weakly prosocline lamellae not aligned axially (~15: ~40: ~50), forming short spines along shoulder. Crests of lamellae erect and delicately granulose at intersections with spiral threads. Interspaces between lamellae with very delicate spiral threads. Last whorl attaining 35% of total height, very narrow subsutural platform, convex below shoulder, marked basal angulation delimited by weak peribasal cord, flattened basal disc, lamellae rapidly weakening over base. Aperture subcircular. Columella concave. Outer lip not preserved. Columellar callus forming broad rim, adherent to but well delimited from base, parietal callus absent. Abapical part of the outer lip ends in distinct spout. Peristome not preserved. No umbilicus.

Discussion. This species was confused in Landau et al. (2013) with the Paratethyan Anguloacrilla kimakowiczi ( Boettger, 1896) , but they differ in the less convex early teleoconch whorls bearing less prominent lamellae, on later whorls the lamellae are much finer and less elevated, and the spiral sculpture is much weaker in Anguloacrilla karamanensis sp. nov. Acrilla lima sp. nov. differs in its much greater number of lamellae and Anguloacrilla schwarzhansi sp. nov. has fewer but more prominent lamellae and prominent spiral cords. The spout-like abapical portion of the aperture, which represents a short siphonal canal and typical for the genus Anguloacrilla nov. gen. is unusual amongst epitoniids and is more strongly developed in A. karamanensis .

Paleoenvironment. Shallow marine environments ( Landau et al. 2013).

Proto-Mediterranean Sea. Karaman Basin: Akboğaz, Akpınar ( Turkey) ( Landau et al. 2013).