Anguloacrilla kimakowiczi ( Boettger, 1896 )

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 : 34

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-FFC4-FFC5-FF3F-FEF3FF5C91B1
treatment provided by	Plazi
scientific name	Anguloacrilla kimakowiczi ( Boettger, 1896 )
status

Treatment

Anguloacrilla kimakowiczi ( Boettger, 1896)

Figs 7B View FIGURE 7 , 12D–F View FIGURE 12

* Scalaria (Acrilla) Kimakowiczi n. sp. — Boettger 1896: 53.

Scalaria (Acrilla) Kimakowiczi Boettger— Boettger 1896: 95 .

Acrilla Kimakowiczi Boettger— Cossmann 1912: 185 View in CoL , pl. 5, fig. 6.

Scala (Acrilla) kimakowiczi Boettg.— Zilch 1934: 230 , pl. 10, fig. 79.

Acrilla (Acrilla) kimakowiczi Boettger— Korobkov 1955 : pl. 16, fig. 23.

Amaea (Acrilla) kimakowiczi (Boettg.) — Báldi 1960: 62, pl. 1, figs 12a–b.

A [maea]. (A [crilla].) kimakowiczi (Boettg.) — Sieber 1958: 129.

Acrilla (Acrilla) kimakowiczi ( Boettger 1896) — Kojumdgieva in Kojumdgieva & Strachimirov 1960: 94, pl. 30, fig. 2.

non Cirsotrema (Elegantiscala) kimakowiczi ( Boettger, 1896) — Janssen 1967: 142, pl. 14, fig. 4 [= Anguloacrilla sp. ].

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

Type material. Holotype, SMF 380170 About SMF _12-1443 ( XII 1443 a), SL: 25 mm, MD: 8.5 mm, CoŞteiu de Sus ( Romania), illustrated in Zilch (1934: pl. 10, fig. 79), Fig. 12D View FIGURE 12 .

Illustrated material. NHMW 1876/0011/0081, SL: 32.2 mm, MD: 11.2 mm, Lăpugiu de Sus ( Romania), Figs 7B View FIGURE 7 , 12E View FIGURE 12 1 –E View FIGURE 1 2 View FIGURE 2 . NHMW 1868/0001/0540, SL: 29.2 mm, MD: 10.5 mm, Lăpugiu de Sus ( Romania), Figs 12F View FIGURE 12 1 –F View FIGURE 1 2 View FIGURE 2 .

Additional material. 3 spec., NHMW 1855 View Materials /0043/0067, Lăpugiu de Sus ( Romania) .

Revised description. Shell very large, moderately slender (apical angle ~25°), finely coronate. Protoconch unknown. Teleoconch of about 13 relatively low whorls. Early teleoconch whorls moderately convex with slight mid-whorl angulation and distinctly impressed suture. Sculpture of prominent, strongly raised, convex axial ribs, no spiral sculpture. Later whorls moderately convex with narrow, shallow subsutural ramp and weakly angled shoulder, periphery placed mid-whorl. Sculpture of numerous, close-set, thin, not very high, only weakly prosocline lamellae not aligned axially (10: 45: 55), forming indistinct, short spines along shoulder. Crests of varices erect. Interspaces between lamellae with numerous, prominent primary and secondary spiral threads, separated by narrower interspaces. Crests of lamellae delicately granulose at intersections with spirals, especially close to abapical suture. Last whorl attaining 35% of total height, with marked basal angulation, delimited by moderate peribasal cord, flattened basal disc. Lamellae weakening over base. Aperture subcircular with parietal concavity. Columella concave. Outer lip not thickened. Columellar callus forming very broad rim, adherent to but well delimited from base, parietal callus absent. Abapical part of the outer lip ends in short spout. Inner layer of peristome separated from outer layer by weak groove. No umbilicus.

Discussion. Anguloacrilla kimakowiczi ( Boettger, 1896) is a rare species that was based on a spire fragment. The revision of the type specimen and the newly available material from Romania show that prominent spiral cords characterize adult shells of this species, whereas subadult specimens (like the holotype) lack conspicuous spiral sculpture. Anguloacrilla karamanensis sp. nov. from the Serravallian of the Karaman Basin ( Turkey) differs in its much weaker spiral sculpture throughout ontogeny. It remains unclear if another Serravallian occurrence from France, mentioned by Cossmann (1912), represents either of these species. Similarly, the specimen illustrated by Janssen (1967) from the Late Burdigalian/Langhian of the North Sea Basin differs from Anguloacrilla kimakowiczi in its relatively weak and widely spaced lamellae and represents an additional yet undescribed species.

Paleoenvironment. Unknown.

Distribution in Central Paratethys. Badenian (Middle Miocene): Pannonian Basin: Szokolya ( Hungary) ( Báldi 1960); Făget Basin: CoŞteiu de Sus, Lăpugiu des Sus ( Romania) ( Boettger 1902); Dacian Basin: Opanec ( Bulgaria) (Kojumdgieva in Kojumdgieva & Strachimirov 1960).

? Northeastern Atlantic. Serravallian (Middle Miocene): Aquitaine Basin: Saubrigues ( France) ( Cossmann 1912).

MD	Museum Donaueschingen
NHMW	Naturhistorisches Museum, Wien

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Taxonomy

Kingdom	Animalia
Phylum	Mollusca
Class	Gastropoda
Family	Epitoniidae
Genus	Anguloacrilla