This simulation of the stride of Argentinosaurus huinculensis, one of the largest sauropods, was created by William Irvin Sellers and his coauthors in PLoS ONE. Read the original article here: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0078733 I had nothing to do with the work, I just thought it was cool, and the video was licensed under Creative Commons, so I posted a few of the clips here. The music is by Harry Manx. Thanks, Harry.