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Tyrannosaurid bite marks on remains of Daspletosaurus



Ben Creisler
bcreisler@gmail.com


A new open-access paper in PeerJ:

D.W.E. Hone & D. Tanke (2015)
Pre- and postmortem tyrannosaurid bite marks on the remains of
Daspletosaurus (Tyrannosaurinae: Theropoda) from Dinosaur Provincial
Park, Alberta, Canada.
PeerJ 3:e885
doi: https://dx.doi.org/10.7717/peerj.885
https://peerj.com/articles/885/



Trace marks on the bones of non-avian dinosaurs may relate to feeding
by large carnivores or as a result of combat. Here the cranium and
mandible of a specimen of Daspletosaurus are described that show
numerous premortem injuries with evidence of healing and these are
inferred to relate primarily to intraspecific combat. In addition,
postmortem damage to the mandible is indicative of late stage carcass
consumption and the taphonomic context suggests that this was
scavenging. These postmortem bites were delivered by a large bodied
tyrannosaurid theropod and may have been a second Daspletosaurus, and
thus this would be an additional record of tyrannosaurid cannibalism.