Tethyspollia mariae (Hoernes & Auinger, 1890)

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 : 55-56

Tethyspollia mariae (Hoernes & Auinger, 1890)

Figs 15K , 28A–C

* Pollia Mariae nov. form.—Hoernes & Auinger 1890: 242, pl. 27, figs 16a–b.

Cantharus (Pollia) mariae (Hoernes & Auinger, 1890) —Kojumdgieva in Kojumdgieva & Strachimirov 1960: 172, pl. 43, figs 15a–b.

Cantharus (Pollia) mariae Hoernes et Auinger — Csepreghy-Meznerics 1972: 28, pl. 11, fig. 19.

Type material. Lectotype (designated herein): NHMW 1873 /0026/0020, SL: 20.6 mm, MD: 10.8 mm, Lăpugiu de Sus ( Romania), illustrated in Hoernes & Auinger (1890, pl. 27, fig. 16), Figs 28B 1 –B 2 . Paralectotypes, NHMW 1868 /0001/0441, SL: 17.8 mm , MD: 10.1 mm, Lăpugiu de Sus ( Romania), Figs 15K , 28A 1 –A 2 ; NHMW 1858 /0043/0043, SL: 16.2 mm , MD: 9.4 mm, Lăpugiu de Sus ( Romania), Fig. 28C .

Additional material. NHMW 1858/0043/0043, SL: 15.2 mm, MD: 8.9 mm, Lăpugiu de Sus ( Romania).

Revised description. Medium-sized, squat, broad biconic shell of up to six teleoconch whorls and slightly coeloconoid early spire; apical angle 54–58°, changing abruptly to 67–70° on third teleoconch whorl. Protoconch only partly preserved, paucispiral; diameter: 700 μm, height: 280 μm. First teleoconch whorl low, almost flat sided with periphery close to abapical suture. Sculpture of three prominent spiral cords overriding widely spaced, slightly prosocline axial ribs. Suture deeply incised causing marked incision in shell profile. Abapically axial ribs broaden and become swollen, roughly aligned axially along prosocline lines. Adapical spiral cord splits on third teleoconch whorl, developing into fourth primary cord; additional spiral appears at abapical suture on fourth teleoconch whorl. One narrow secondary cord intercalated between each pair of primaries on fourth whorl. Last whorl attaining ~70% of total height, strongly convex at periphery, weakly constricted at base, bearing eight very broad axial ribs fading over base, overrun by about 11 primary spiral cords with one or two secondaries intercalated; distinct growth lines in spiral interspaces; fasciole broad, indistinct with several spiral cords and raised growth lines. Aperture strongly narrowed by apertural armature. Columella moderately excavated in upper half. Columellar callus forming prominent rim, sharply delimited from base, with three to four broad columellar folds.Apical part of aperture widely convex, with indistinct anal canal. No parietal denticle, no anal denticle. Outer lip thickened with very prominent, blunt denticles, adapical three forming poorly delimited palatal swelling, decreasing in strength towards siphonal canal. Adapical denticle prominent, knob-like, placed some distance from adapical tip of aperture. About six long lirae deep inside aperture, separated from denticles. Siphonal canal moderately long, moderately narrow, slightly twisted with notch.

Discussion. This species is characterized by its stout biconic shape with deeply incised suture and the very prominent apertural armature, distinctly narrowing the aperture. To our knowledge, there are no other buccinoids in the Circum-Mediterranean Region with which this species could be confused. It is similar in profile to Speccapollia africana Fraussen & Stahlschmidt, 2016 from present-day from Mozambique, but differs in the generic characters of the genus Tethyspollia nov. gen. (see generic note).

Paleoenvironment. Unknown.

Distribution in Central Paratethys. Badenian (Middle Miocene): Bükk Mountains: Borsodbóta ( Csepreghy-Meznerics 1972); Făget Basin: Lăpugiu de Sus ( Romania) (Hoernes & Auinger 1890); Dacian Basin: Târnene, Dobrusha ( Bulgaria) (Kojumdgieva in Kojumdgieva & Strachimirov 1960).

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 15. Protoconchs of Paratethyan Pisaniidae, Prodotiidae and Tudiclidae. A. Aplus moravicus (Hoernes & Auinger, 1890), NHMW 1862/0029/0034, lectotype, Rudice u Blanska (Czech Republic). B. Aplus subpusillus (Hoernes & Auinger, 1890), NHMW 1866/0001/1066, paralectotype, Forchtenau (Austria). C. Aplus transsylvanicus (Hoernes & Auinger, 1890), NHMW 1873/0026/0019b, lectotype. D. Aplus zebus (De Gregorio, 1885a), NHMW 1855/0045/0439, Gainfarn (Austria). E. Aplus anatolicus nov. sp. RGM 784 005, paratype, Seyithasan (Turkey). F. Hilda transsylvanica (Hoernes & Auinger, 1884), NHMW 1876/0011/0023a, lectotype, Lăpugiu de Sus (Romania).G. Janiopsis vindobonensis nov. sp., NHMW 1850/0009/0002, holotype, Baden (Austria). H. Monostiolum hungaricum (Csepreghy-Meznerics, 1954), NHMW 1868/0001/0094, Steinebrunn (Austria). I. Dianthiphos klaudiae (Kovács & Vicián, 2023), NHMW1846/0037/0144a, Steinebrunn (Austria). J. Euthria obelixi nov. sp., NHMW 1865/0015/0060, holotype, Lysice (Czech Republic). K. Tethyspollia mariae (Hoernes & Auinger, 1890), NHMW 1868/0001/0441, paralectotype, Lăpugiu de Sus (Romania).

FIGURE 28. Tethyspollia mariae (Hoernes & Auinger, 1890). A1–A2. NHMW 1868/0001/0441, paralectotype, Lăpugiu de Sus (Romania). B1–B2. NHMW 1873/0026/0020, lectotype, Lăpugiu de Sus (Romania). C. NHMW 1858/0043/0043, paralectotype, Lăpugiu de Sus (Romania).