Vladimir S. Zazhigin. Geological Institute (GIN), Russian Academy of Sciences, Pyzhevskii per. 7, Moscow, 109017, Russia.

Vladimir S. Zazhigin is a Senior Scientist Researcher of the Laboratory of Quaternary Stratigraphy of GIN. His research is focused on the evolution of the Neogene small mammals in the Palearctic.

Leonid L. Voyta. Zoological Institute (ZIN), Russian Academy of Sciences, Universitetskaya nab. 1, Saint Petersburg, 199034, Russia.

Leonid L. Voyta is a Senior Scientific Researcher of the Laboratory of Theriology of ZIN. His research interests are focused on the evolution of the Neogene, Quaternary and Recent lineages of eulipotyphlans.