What is "pseudaelurus"

Pseudaelurus is a prehistoric cat that lived in Europe, Asia and North America in the Miocene between approximately 20 and 8 million years ago. It is an ancestor of today's felines and pantherines as well as the extinct machairodont saber-tooths, and is a successor to Proailurus. It originated from Eurasia and was the first felid to reach North America, when it entered the continent at about 18.5 Ma ending a ' cat-gap' of 7 million years. The slender proportions of the animal, together with its short, viverrid-like legs, suggest that it may have been an agile climber of trees.