New taxa of vespertilionid bats (Chiroptera, Mammalia) from the Late Miocene of Ukraine

摘要

A new genus Eptenonnus nov. gen. represented by E. gritsevensis nov. sp. and a new spe-cies of Myotis, M. korotkevichae nov. sp. are described from the Gritsev locality (the Early Vallesian, MN 9) of Ukraine. E. gritsevensis is a medium-sized vespertilionid which combines some plesio-morphic features (e.g. three lower premolars and two upper premolars in dentition) with apomorphic characters (e.g. a short incisor tooth-row, a strong reduction of P2). The new species, M. korotkevi-chae, is the largest Neogene Myotis known up to now from the territory of the Eastern Paratethys. Morphologically it is similar to the Pliocene M. podlesicensis from Poland.