Naugolnykh Sergey V. Afonkin Maxim I. A new representative of the ichnogenus Megalosauripus (dinosaurs) from the Lower Cretaceous of Northern Caucasus
Naugolnykh Sergey V. Linkevich Valeryi V. Artinskian flora (Lower Permian) of the stratotypic area (the Middle Cis-Urals)