Edmontosaurus, Lambe, 1917

Erickson, Gregory M. & Kenneth H. Olson, 1996, Bite marks attributable to Tyrannosaurus rex: preliminary description and implications, Journal of Vertebrate Paleontology 16 (1), pp. 175-178 : 175

An additional specimen, a proximal pedal phalanx of Edmontosaurus sp.

( University of California, Museum of Paleontology; cast 140601 ) from the same general vicinity as the Triceratops pelvis, shows T. rexlike bite marks (i.e. broad and deep elongate bite furrows). The element has five bite mark furrows distributed axially on its dorsal and lateral surfaces ( Fig. 4 ). The largest furrow is 5.4 cm long and 0.9 cm deep. The bite furrows are deeper toward the proximal end of the element, suggesting that the tyrannosaur was pulling away from the carcass as it produced the bite marks. No serration marks are evident on the specimen.

Figures

FIGURE 4. Edmontosaurus proximal pedal phalanx (UCMP 140601) bearing tyrannosaur-like “puncture and pull” bite mark furrows. The specimen bears five such bite marks (three are visible). The furrows are deeper proximally suggesting the element was somewhat articulated at the time of feeding. Scale = 2.5 cm.