A tyrannosaur jaw bitten by a confamilial: scavenging or fatal agonism?

摘要: Bell, P.R. & Currie, P.J. 2009: A tyrannosaur jaw bitten by a confamilial: scavenging or fatal agonism?. Lethaia, Vol. 43, pp. 278–281. A partial dentary of an adult from the Dinosaur Park Formation Alberta, Canada, preserves embedded tooth another within bone. The specimen’s incompleteness precludes generic identification either tooth, although Gorgosaurus and/or Daspletosaurus are most likely given stratigraphic position. absence healing around lesion indicates bite took place post-mortem weeks prior to death this animal. can be explained confamilial cannibalistic scavenging. Alternatively, would represent perimortem instance intrafamilial aggression that may have resulted in An estimated 6053N force was required produce mark. This specimen provides best evidence for aggressive peri- interaction among tyrannosaurs and corroborates previous studies based on inferred marks. □Alberta, behaviour, Campanian, Cretaceous, Formation, Theropoda, Tyrannosauridae.