Tweets by Prehistorick on 04 Jul

#DidYouKnow that there are 2 currently recognized species of Triceratops, with more than a dozen others that have been proposed over the years? Of the two valid species, T. horridus lived 1-2 million years before T. prorsus. 😮 🦕 Prehistoric Kingdom: http://bit.ly/pk_steam http://pbs.twimg.com/media/FUqw1TqXEAEI_lJ.jpg