`Monstrous` new Russian saber-tooth fossils clarify early evolution of mammal lineage
(PHYSorg.com Archaeology & Fossils)

Fossils representing two new species of saber-toothed prehistoric predators have been described by researchers from the North Carolina Museum of Natural Sciences (Raleigh, USA) and the Vyatka Paleontological Museum (Kirov, Russia). These new species improve the scientists` understanding of an important interval in the early evolution of mammals-a time, between mass extinctions, when the roles of certain carnivores changed drastically.