image: T. horridus skeleton and dentitions. (A) Triceratops skeleton. (B) Transverse view of a dentary (lower jaw) tooth family in this dinosaur whose functional teeth wore to vertical slicing faces. The stippling depicted on the bifid roots is the cementum-like tissue described by Hatcher and colleagues (46) . Image from (46) used with permission. (C) Naturally worn slicing teeth in the lower jaw of MOR 129734 showing the wear-induced bowing-out of the central regions of the occlusal faces of the teeth (arrow) to form fuller-like implements. This material relates to a paper that appeared in the June 5, 2015, issue of Science, published by AAAS. The paper, by G.M. Erickson at Florida State University in Tallahassee, FL, and colleagues was titled, 'Wear biomechanics in the slicing dentition of the giant horned dinosaur Triceratops.' view more
Credit: [Credit: Erickson <i>et al. </i> Sci. Adv. 2015;1:e1500055]