Elasmobranch (Chondrichthyes) assemblages from the Albian (Lower Cretaceous) of Ukraine

Sampling of six horizons quartz-glauconite sands in Kaniv dislocations Ukraine yielded more than three thousand vertebrate specimens, including elasmobranch teeth, chimaera dental plates, actinopterygian and sauropsid teeth bones. Our study represents the first illustrated detailed description from Ukrainian Albian deposits since Rogovich (1861), whose specimens were still preserved collections Kiev National Natural History Museum Academy Sciences Ukraine. Twenty-three species belonging to eight orders identified our samplings some Rogovich's material. This paper provides new data on systematics Cretaceous elasmobranchs assesses taxonomic status species. Sampled assemblages include hybodonts, synechodontiforms, hexanchiforms, squaliforms, squatinifroms, orectolobiforms, heterodontiforms lamniforms. The latter dominate assemblages, both terms number with small odontaspidid species, early pseudoscapanorhynchids archaeolamnids as well large carnivorous sharks Cretoxyrhina Cretolamna. Most importantly, Paraisurus macrorhizus vraconensis findings indicate a late age for sampled deposits, which so far considered Albian–Cenomanian.