Oligodia, Handmann, 1882

Harzhauser, Mathias & Landau, Bernard, 2019, Turritellidae (Gastropoda) of the Miocene Paratethys Sea with considerations about turritellid genera, Zootaxa 4681 (1), pp. 1-136 : 58-59

Oligodia ? sp.

Figs 16K

Turritella (Haustator) unipseudocarinata Voorth. — Sieber, 1960: 247, pl. 1, fig. 33 [non Turritella (Haustator) unipseudocarinata van Voorthuysen, 1944 ].

Haustator Miohaustator? [sic] unipseudocarinatus Voorthuysen — Stürmer, 1989: 129, pl. 4, fig. 12, pl. 10, fig. 11 [non Turritella (Haustator) unipseudocarinata van Voorthuysen, 1944 ].

Studied and illustrated material. Fig. 16K : NHMW 1963/0053/0000, SL: 28.8 mm, MD: 9.7 mm, Niederleis ( Austria), illustrated in Sieber (1960, pl. 1, fig. 33) as Turritella (Haustator) unipseudocarinata van Voorthuysen 1944 .

Discussion. A fragment with delicate sculpture of secondary and tertiary spiral cords from the Badenian of Niederleis ( Austria) was identified by Sieber (1960, pl. 1, fig. 33) and Stürmer (1989) as Turritella pseudounicarinata van Voorthuysen, 1944 . This species was originally described from the middle Miocene of the North Sea Basin (van Voorthuysen 1944: 17, pl. 1, figs 1–12, pl. 2, fig. 15.). Despite some similarities between the Paratethyan shell and Haustator pseudounicarinata in size and overall morphology, the latter clearly differs by the more adapical position of the keel. It has a wider pleural angle, a well-defined suture, due to a cord-like swelling at the abapical suture and develops weaker sculpture. The fragment from Niederleis is also reminiscent of the Pliocene Mediterranean Haustator strobeliana ( Cocconi, 1873) and its subspecies H. s. mediocinctula Sacco, 1895, which differ in their imbricate profile. The Pliocene Haustator vanderfeeni Brakman, 1937 , from the North Sea Basin ( Marquet 1998), differs in the much weaker carina in the middle of the whorls and the broader shell. It is reminiscent of Oligodia sulcomarginalis ( Sacco, 1895) but has a broader pleural angle and a more prominent mid-whorl keel. Moreover, the spiral sculpture of O. sulcomarginalis is more uniform. Nevertheless, we cannot exclude that this single specimen is an aberrant O. sulcomarginalis . The available fragment shows prominent basal lirae.

Distribution in Central Paratethys. North-Alpine Foreland Basin: Niederleis ( Austria).

Figures

FIGURE 16. A–E. Oligodia bicarinata (Eichwald, 1830). A1–A2. Grund (Austria), NHMW 1851/0002/0061. B1–B2. Mikulov, (Czech Republic), NHMW 1846/0037/0378. C1–C2. Steinebrunn (Austria), NHMW 1963/0513/0000. D. Steinebrunn (Austria), NHMW 1860/0001/0275a. E1–E2. Bilosirka, Ternopil Oblast, Ukraine, NHMW 2018/0193/0001. F–G. Oligodia spirata (Brocchi, 1814), Baden (Austria). F1–F2. BNHMW 1869/0001/0186. G1–G2. NHMW 1846/0037/0381. H–J. Oligodia sulcomarginalis (Sacco, 1895). H. Holotype, Steinebrunn (Austria), NHMW 1864/0001/0587. I. Mikulov-Kienberk (Czech Republic), NHMW 2018/0203/0002. J. Mikulov-Kienberk (Czech Republic), NHMW 2018/0203/0003. K. Oligodia? sp., Niederleis (Austria), NHMW 1963/0053/0000.