Palaeozygopleura tenuicostata Horný, 1955

Frýda, Jiří, Ferrová, Lenka & Frýdová, Barbora, 2013, Review of palaeozygopleurid gastropods (Palaeozygopleuridae, Gastropoda) from Devonian strata of the Perunica microplate (Bohemia), with a re-evaluation of their stratigraphic distribution, notes on their ontogeny, and descriptions of new taxa, Zootaxa 3669 (4), pp. 469-489 : 482

Palaeozygopleura tenuicostata Horný, 1955

Holotype. NMP 34881 (Horný 1955: pl. IV, fig. 5).

Paratypes. Horný (1955) did not establish any paratype, even though he had about 120 unnumbered specimens of this species in his type series, all of which should be now considered to represent paratypes (ICZN 72.4.1.1).

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 the Třebotov Limestone (Daleje-Třebotov Formation); the latest Emsian to early Eifelian, Middle Devonian.

Remarks. Horný (1955) described this species based on about 120 specimens collected earlier by Mr. F. Hanuš, and suggested that this species developed from P. svobodai of Pragian age. He also mentioned that this morphologically variable form is closest to P. p r a n t l i. However Frýda and Bandel (1997) noted that transitional forms of P. hanusi , P. prantli , and P. bohemica are present in the same stratigraphic level of the type locality and they can represent synonyms.

Stratigraphic and geographic distributions. This species is only known from its type horizon and locality.