Ptychidia studeri ( Rutsch, 1929 )

Harzhauser, Mathias & Landau, Bernard, 2019, Turritellidae (Gastropoda) of the Miocene Paratethys Sea with considerations about turritellid genera, Zootaxa 4681 (1), pp. 1-136 : 108

Ptychidia studeri ( Rutsch, 1929)

T. [urritella] terebra— Studer, 1825: 332 [non Turritella terebra Linnaeus, 1758 ).

T. Studeri May — Mayer, 1853: 96, nr. 242 [nomen nudum].

Turritella turris— Kissling, 1890: 35, pl. 6, fig. 43 [non Turritella turris de Basterot, 1825 ].

* Turritella turris var. studeri Rutsch, 1929: 36 , pl. 2, figs 5–6.

Turritella (Haustator) turris studeri Mayer — Sieber, 1960: 234, pl. 1, figs 9, 26.

Turritella studeri Rutsch, 1929 — Pfister & Wegmüller, 2007: 93, pl. 9, figs 7–15, pl. 10, figs 1–3.

? Turritella studeri Mayer — Kókay, 2002: 371, pl. 2, fig. 2 [non fig. 1].

Turritella studeri— Pfister et al., 2011: 162.

Discussion. A very dubious species, which was based by Rutsch (1929) on poorly preserved internal casts. One of the illustrated syntypes ( Rutsch 1929, pl. 2, fig. 6) seems to represent Turritella terebralis Lamarck, 1822 , in respect to its characteristic lateral sinus. Most of the specimens described by Pfister & Wegmüller (2007), however, may document a distinct species, typical for the Swiss early Miocene. Sieber (1969) and Pfister & Wegmüller (2007) stressed a relationship of T. studeri with ‘ Turritella eryna ’ (= Ptychidia erynella new sp.), which might suggest a placement of T. studeri in Ptychidia .

Distribution. Western Paratethys. North Alpine Foreland Basin: Burdigalian: (Eggenburgian/ Ottnangian) Switzerland (Bern region, St. Gallen, Belpberg), Austria (Bregenz, Wirtatobel) ( Pfister et al. 2011).