Nerinea constricta suevica Quenstedt, 1858 nomen dubium

Gruendel, Joachim, Keupp, Helmut, Lang, Fritz & Nuetzel, Alexander, 2022, Late Jurassic (Upper Kimmeridgian) Heterobranchia (Gastropoda) of the coral-facies of Saal near Kelheim and the viciniy of Nattheim (Germany), Zitteliana 96, pp. 179-221 : 179

Nerinea constricta suevica Quenstedt, 1858 nomen dubium

1852 - Nerinea constricta Roemer, 1836 - Quenstedt: 429, pl. 34, fig. 32.

*1858 - Nerinea constricta suevica - Quenstedt: 769, pl. 94, fig. 25.

*1881-84 - Nerinea columelloides - Quenstedt: 556, pl. 207, figs 16, 17.

Remarks.

Two small fragments from the Nattheim area labelled Nerinea constricta suevica were found in the collection of Quenstedt (1881-1884) of the Tübingen Institute. They probably represent two species because they have different apical angles (one very slender, the other distinctly broader). The slender specimen is probably the one illustrated by Quenstedt (1852: N. constricta Roemer, 1836; 1858: Nerinea constricta suevica ; 1881-1884: N. columelloides Quenstedt). Because the original material is fragmentary, poorly preserved and probably represents two species, N. constricta suevica is herein considered a nomen dubium. It is (even according to Quenstedt 1881-1884) not identical with Nerinea suevica Quenstedt, 1858 (see under Nerinella subscalaris Münster, 1844 in Goldfuss).