Bellacolumbella immatura

Harzhauser, Mathias & Landau, Bernard M., 2024, The Colubrariidae, Eosiphonidae, Melongenidae, Pisaniidae, Prodotiidae and Tudiclidae (Gastropoda, Buccinoidea) of the Miocene Paratethys Sea, Zootaxa 5427 (1), pp. 1-110 : 93

Bellacolumbella immatura (Fuchs in Karrer, 1877)

Figs 49A–B

* Fusus immaturus n. sp. —Fuchs in Karrer 1877: 368, pl. 16a, fig. 2.

Fusus ( Euthria ?) immaturus Fuchs —Hoernes & Auinger 1890: 257, pl. 31, fig. 11 [non fig. 12 = Bellacolumbella embryonalis ( Boettger, 1902) ].

Fusus immaturus Fuchs — Csepreghy-Meznerics 1956: 411.

E [uthria]. (E [uthria].) immatura Fuchs — Sieber 1958: 150.

F [usus]. (F [usinus].) immaturus Fuchs — Sieber 1958: 152.

Euthria () immatura Fuchs (in Karrer), 1842— Strausz 1966a: 306, fig. 138.

Type material. Lectotype (designated herein): NHMW 2023 /0357/0002, SL: 3.2 mm, MD: 1.5 mm, Perchtoldsdorf ( Austria); illustrated in Fuchs in Karrer (1877: pl. 16a, fig. 2), Figs 49A 1 –A 2 .

Illustrated material. NHMW 1868/0051/0009, SL: 3.6 mm, MD: 1.8 mm, illustrated in Hoernes & Auinger (1890: pl. 31, fig. 11), Perchtoldsdorf ( Austria), Fig. 49B .

Discussion. This tiny species was placed in Euthria by Hoernes & Auinger (1890), which was followed by subsequent authors. The large protoconch with the characteristic sculpture of delicate axial ribs is typical for the columbellid genus Bellacolumbella Harzhauser & Landau, 2021 . Bellacolumbella immatura differs from congeneric species described by Harzhauser & Landau (2021) and represents an additional species in this genus, which was overlooked by Harzhauser & Landau (2021) in their revision of the Paratethyan Columbellidae .

Distribution in Central Paratethys. Badenian (Middle Miocene): Vienna Basin: Perchtoldsdorf ( Austria) (Hoernes & Auinger 1890); Pannonian Basin: Szob ( Hungary) ( Strausz 1966a).

Figures

FIGURE 1. Measurements for shell morphology; AA: apical angle, SL: shell length, MD: maximum diameter, LWH: last whorl height, AH: aperture height, AL: aperture length, AW: aperture width.

FIGURE 2. Colubraria subobscura (Hoernes & Auinger, 1884). A1–A3. NHMW 1854/0035/0170, paralectotype, Lăpugiu de Sus (Romania). B1–B2. NHMW 1859/0037/0018a, paralectotype, Lăpugiu de Sus (Romania). C1–C3. NHMW 1865/0001/0183, paralectotype, Lăpugiu de Sus (Romania). D1–D2. NHMW 1859/0037/0018b, paralectotype, Lăpugiu de Sus (Romania). E1–E3. NHMW 1874/0025/0021, lectotype, Lăpugiu de Sus (Romania). F1–F2. NHMW 2023/0338/0001, paralectotype, Lăpugiu de Sus (Romania).

FIGURE 49. A1–A2. Bellacolumbella immatura (Fuchs in Karrer, 1877), NHMW 2023/0357/0002, lectotype, Perchtoldsdorf (Austria). B. Bellacolumbella immatura (Fuchs in Karrer, 1877), NHMW 1868/0051/0009, Perchtoldsdorf (Austria). C1–C2. Bellacolumbella embryonalis (Boettger, 1902), NHMW 1868/0001/0413, Lăpugiu de Sus (Romania).