A new basal ray-finned fish, Karabalyk esini gen. et sp. nov., is described based on the occurrence of two incomplete skeletons from Kargaly copper mines (Orenburg Region, Russia; Urzhumian (=Wordian) Stage). Additionally, varieties of isolated scales from the Urzhumian (=Wordian) and Severodvinian (=Capitanian) deposits are referred to K. esini on the basis of comparisons with the articulated specimens. Uranichthys pretoriensis Minich 2009 was described in a succinct description on a single poorly-preserved specimen from Urzhumian (=Wordian) deposits of the same Orenburg Region. U. pretoriensis is considered a nomen dubium due to the extremely poor preservation of the holotype (systematically important features absent). Most of U. pretoriensis specimens can confidently be assigned to K. esini gen. et sp. nov..
BAKAEV et al. (Wed,) studied this question.