Mastodon fossil throws up questions over 'rapid' extinction
Tuesday, October 25, 2011 - 12:30
in Paleontology & Archaeology
Mastodon fossil throws up questions over 'rapid' extinctionNature News , 20102011 doi: 10.1038/news.2011.606Brian SwitekA bone tool embedded in a mastodon rib suggests humans were hunting big game earlier than thought.