Paleontologists lick bones to determine if they are a bone or a stone. On dating fossils: http://ow.ly/MoA83029wpq pic.twitter.com/X3JMe3o363
6:00 AM - 12 Jul 2016
0 replies
16 retweets
23 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.