Palaeozygopleura bohemica Horny 1955

Palaeozygopleura bohemica Horný, 1955

Holotype. NMP 34884 (Horný 1955: pl. VI, fig. 1).

Paratypes. NMP (Horný 1955: pl. VI, fig. 2), and an additional 200 unnumbered shells deposited in the same collection.

Type locality. Section in small quarry NE of the village of Holynĕ and W of the Prastav quarry (50°1'57.627"N, 14°21'5.471"E).

Type horizon. Uppermost part of Třebotov Limestone (Daleje-Třebotov Formation); the latest Emsian to early Eifelian, Middle Devonian.

Remarks. This species is one of the most common of all early Eifelian Bohemian palaeozygopleurids. Horný (1955) based the description of this new species on a large amount of material collected earlier by F. Hanuš. Frýda and Bandel (1997) described the protoconch morphology in this species and noted that it is formed by half a whorl, which is smooth and its diameter is slightly more than 0.3 mm. All whorls succeeding the protoconch are ornamented by characteristic costae, as had already been shown by Horný (1955: pl. II, fig. 5).

Stratigraphic and geographic distributions. Horný (1955) mentioned the type locality Holynĕ as the only occurrence of P. bohemica. Recently, a rich occurrence of the latter species was recorded in the same stratigraphic level at the Barrandov II section, SW part of Prague, where this species was found together with other gastropods in the uppermost part of Třebotov Limestone (early Eifelian).