Pseudaelurus is a successor to an extinct carnivoran felid that lived in Europe and Asia how long ago?
Pseudaelurus:  It is an ancestor of today's felines and pantherines as well as the extinct machairodont saber-tooths, and is a successor to "Proailurus". Proailurus: Proailurus (meaning "before the cat") is an extinct carnivoran felid that lived in Europe and Asia approximately 25 million years ago in the Late Oligocene and Miocene.
25 million years ago