“Cave Men”

http://www.usatoday.com/tech/science/discoveries/2010-12-22-extinct-pre-humans-confirmed_N.htm

Genetic analysis of fossilized bone fragments has confirmed a previously unknown, extinct human species similar to the Neanderthals, called Denisovans, named for the Siberian cave where the bones were discovered. These people have no modern descendants, but scientists have strong theories about many details of their lives and culture based on episodes of Jersey Shore.