Skrat lived! Scientists have dug up a saber-toothed squirrel! Okay, not a squirrel, but it looks like one. This critter fills a 150-million-year gap in the fossil record, helping bridge the earliest-known mammals with the group that includes all modern mammals.

http://arstechnica.com/science/news/2011/11/extinct-squirrel-bridges-150-million-year-gap-in-fossil-record.ars?utm_source=rss&utm_medium=rss&utm_campaign=rss