Tyrannosaur feeding traces on Deinocheirus (Theropoda:?Ornithomimosauria) remains from the Nemegt Formation (Late Cretaceous), Mongolia

► Tarbosaurus bite marks are identified on gastralia of the enigmatic theropod Deinocheirus. ► Evidence suggests bites are a result of feeding/scavenging behaviour, not interspecific agonism. ► These findings are consistent with opportunistic feeding style in tyrannosaurids. ► Feeding/scavenging was partly responsible for disarticulation of the Deinocheirus skeleton.