Pragozyga Frýda, 1999

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 : 483

Pragozyga Frýda, 1999

Type species. Pragozyga costata Frýda, 1999 (OD).

Remarks. Frýda (1999) originally placed Pragozyga into the superfamily Loxonematoidea Koken, 1889, and discussed its similarity with some members of families Loxonematidae Koken, 1889 and Palaeozygopleuridae Horný, 1955 . Diagnoses of the both families need detailed revision (see discussion in Frýda 1993). Increase of morphologic disparity of palaeozygopleurid shells described during the last twenty years led independently Frýda et al. (2008) and Wagner (2011) to placement of Pragozyga into the Palaeozygopleuridae . Wagner (2011) recently transferred Loxonema jerseyense Weller, 1903 from the Lochkovian strata of Maine (northeastern US) to the genus Pragozyga . Poor preservation of shell on the latter species coming from sandstone strata makes this placement unsafe.

Composition. P. costata Frýda, 1999 , and P.? jerseyense (Weller, 1903) .