Strioterebrum exbistriatum
Creators: name: Harzhauser, Mathias
name: Landau, Bernard M.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Terebridae
Strioterebrum
Strioterebrum exbistriatum

description: Strioterebrum exbistriatum (Sacco 1891a)
Figs 16A–G
Terebra bistriata Grat. — Hörnes 1852: 134, pl. 11, fig. 29 [non Strioterebrum bistriatum (Grateloup, 1834)].
Terebra bistriata Grat. — Hoernes & Auinger 1880: 111, pl. 12, figs 24a–b [non Strioterebrum bistriatum (Grateloup, 1834)].
* [Terebrum] Strioterebrum exbistriatum Sacc. — Sacco 1891a: 37 [pro Terebra bistriata sensu Hörnes 1852: pl. 11, fig. 29].
Terebra bistriata Grat. — Boettger 1902: 18 [non Strioterebrum bistriatum (Grateloup, 1834)].
Terebra (Myurella) exbistriata Sacco — Csepreghy-Meznerics 1956: 423, pl. 12, figs 7–11.
T [erebra]. (M [yurella].) exbistriata Sacco — Sieber 1958: 162.
Terebra (Myurella) exbistriata Sacco —Kojumdgieva in Kojumdgieva & Strachimirov 1960: 217, pl. 51, figs 10–11.
Strioterebrum exbistriatum Sacco, 1891 — Glibert 1960: 110.
Terebra (Myurella) exbistriata Sacco. — Báldi 1960: 88.
Terebra bistriata exbistriata Sacco — Strausz 1966: 390, pl. 4, figs 34–35.
Terebra (Strioterebrum) exbistriata Sacco —MarincaŞ et al. 1970: 279, pl. 7, figs 1a–b.
Terebra bistriata exbistriata Sacco — Nicorici 1972: 69.
Terebra (Strioterebrum) bistriatum Sacco, 1891 — Atanacković 1985: 183, pl. 41, figs 3–4 [non Strioterebrum bistriatum (Grateloup, 1834)].
Strioterebrum (Strioterebrum) bistriatum (Grateloup, 1833) — Bałuk 1997: 67, pl. 25, figs 4–5 [non Strioterebrum bistriatum (Grateloup, 1834)].
Type material. Holotype, NHMW 1846 /0037/0120, SL: 33.0 mm, MD: 6.7 mm, Baden (Austria), illustrated in Hörnes (1852: pl. 11, fig. 29), Figs 16E 1 –E 2.
Illustrated material. NHMW 1854/0035/0116, SL: 43.2 mm, MD: 7.7 mm, Lăpugiu de Sus (Romania), illustrated in Hoernes & Auinger (1880: pl. 12, figs 24a–b). Figs 16A 1 –A 2. NHMW 2010/0004/1093, SL: 34.5 mm, MD: 6.6 mm, Bad Vöslau (Austria), Figs 16B 1 –B 2. NHMW 1868/0001/0416, SL: 38.1 mm, MD: 6.9 mm, Lăpugiu de Sus (Romania), Figs 16C 1 –C 2. NHMW 1868/0001/0416, SL: 32.5 mm, MD: 6.4 mm, Lăpugiu de Sus (Romania), Figs 16D 1 –D 2. NHMW 2010/0004/1090, SL: 33.2 mm, MD: 6.1 mm, Bad Vöslau (Austria), Fig. 16F 2. NHMW 2010/0004/1090, SL: 34.5 mm, MD: 6.0 mm, Bad Vöslau (Austria), Fig. 16G.
Additional material. 1spec., NHMW1863 /0040/06348, Niederleis (Austria); 13spec., NHMW1860 /0001/0164, Baden (Austria); 9 spec., NHMW 2013 /0078/0416, Baden (Austria); 3 spec., NHMW 2007 z0078/0047, Baden (Austria); 5 spec., NHMW A1544, Baden-Sooss (Austria); 10 spec., NHMW 1872 /0030/0021, Baden-Sooss (Austria); 26 spec., NHMW 2013 /0300/0402, Baden-Sooss (Austria); 36 spec., NHMW 2013 /0300/0400, Baden-Sooss (Austria); Bad Vöslau (Austria); 1 spec., NHMW 1862 /0001/0313, Bad Vöslau (Austria); 1 spec., NHMW 2012 /0229/0173, Traiskirchen (Austria); 1 spec., NHMW 1866 /0040/0167, Möllersdorf (Austria); 4 spec., NHMW 1862 /0011/0453, Jaroměřice (Czech Republic); 1 spec., NHMW 1863 /0015/0928, Hrušovany nad Jevišovkou (Czech Republic); 15 spec., NHMW 1854 /0035/0116, Lăpugiu de Sus (Romania); 7 spec., NHMW 1973 /1615/0094, Lăpugiu de Sus (Romania); 10 spec., NHMW 2016 /0177/0948, Lăpugiu de Sus (Romania); 5 spec., NHMW 2018 /0248/0356, CoŞteiu de Sus (Romania); 6 spec., NHMW 2018 /0248/0357, CoŞteiu de Sus (Romania); 14 spec., NHMW 1867 /0019/0053, CoŞteiu de Sus (Romania).
Revised description. Medium sized, very slender conical shell of up to 16 teleoconch whorls; apical angle ~21– 25°, later decreasing to ~8–10°. Protoconch unknown. Early teleoconch whorls with prominent orthocline axial ribs separated by narrower interspaces. Subsutural band indistinct, vaguely delimited by shallow groove. Interspaces between axial ribs widening slightly on later whorls, filled with delicate, dense spiral threads. Subsutural band not swollen, weakly delimited by shallow groove of variable width. Whorl profile subcylindrical to weakly convex. Suture distinctly incised. Spire profile weakly gradate. Last whorl moderately high, ~26–30% of total height, subcylindrical to weakly convex. Base convex, moderately constricted. Fasciole moderately prominent, broad, with few growth increments, not sharply delimited. Aperture narrow. Columella slightly twisted, moderately excavated in adapical half. Columellar callus forming broad, thin rim, sharply delimited from base. No columellar fold. Anal canal indistinct, narrowly incised. Outer lip thin. Siphonal canal moderately long, twisted, narrow, slightly deflected to the left, moderately deeply notched at tip.
Discussion. Already Sacco (1891a: 37) and Peyrot (1931: 117) pointed out that the Paratethyan specimen described by Hörnes (1852) was different from the Early Miocene Strioterebrum bistriatum (Grateloup, 1934) from France. They differ in the more convex whorls of S. exbistriatum, its deeper suture, more sigmoidal axial ribs and distinct and dense spiral sculpture (see Strioterebrum bistriatum from the Late Burdigalian of St-Jean-de-Marsacq (France) in Peyrot 1931: pl. 10, figs 13–15). The weaker poorly delimited subsutural band, and the denser, finer spiral sculpture in the axial interspaces, allow a separation from Strioterebrum volhynianum (d’Orbigny, 1852).
Paleoenvironment. Most of the specimens derive from localities suggesting middle to outer neritic depositional environments (e.g., Baden Formation; Kranner et al. 2021).
Distribution in Central Paratethys. Badenian (Middle Miocene): North Alpine-Carpathian Foreland Basin: Hrušovany nad Jevišovkou, Jaroměřice (Czech Republic) (Hoernes & Auinger 1880); Korytnica Basin: Korytnica (Poland) (Bałuk 1997); Vienna Basin: Baden, Baden-Sooss, Bad-Vöslau, Möllersdorf, Niederleis, Traiskirchen (Austria) (Hoernes & Auinger 1880; hoc opus); Pannonian Basin: Letkés, Szob, Szokolya (Hungary) (Báldi 1960); southern Pannonian Basin: Hrvaćani (Bosnia and Herzegovina) (Atanacković 1985); Eisenstadt-Sopron Basin: Forchtenau (Austria) (Hoernes & Auinger 1880); Făget Basin: CoŞteiu de Sus, Lăpugiu de Sus, NemeŞeŞti (Romania) (Hoernes & Auinger 1880; Boettger 1902; hoc opus); Şimleu Basin: Tusa (Romania) (Nicorici 1972); Dacian Basin: Urobene, Opanec, Staropatica (Bulgaria) (Kojumdgieva in Kojumdgieva & Strachimirov 1960).
description: Published as part of Harzhauser, Mathias & Landau, Bernard M., 2023, The auger snails (Gastropoda, Conoidea, Terebridae) of the Miocene Paratethys Sea, pp. 1-70 in Zootaxa 5385 (1) on pages 35-36, DOI: 10.11646/zootaxa.5385.1.1, http://zenodo.org/record/10376252