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Bite marks on the bones of dinosaurs are relatively rare for non‐tyrannosaur dominated faunas, and few have been described in detail. Here, we describe a femur of a young diplodocoid sauropod in the Carnegie Quarry (Late Jurassic Morrison Formation) at Dinosaur National Monument that shows extensive bite marks to the proximal part of the bone. This is the only record of bite marks from this extensive...
Little is known about the evolution of large-bodied theropod dinosaurs during the Early to mid Cretaceous in Asia. Prior to this time, Asia was home to an endemic fauna of basal tetanurans, whereas terminal Cretaceous ecosystems were dominated by tyrannosaurids, but the intervening 60 million years left a sparse fossil record. Here, we redescribe the enigmatic large-bodied Chilantaisaurus maortuensis...
In light of diverse geological evidence that indicates a seasonal, semiarid climate for the time of deposition of the Morrison Formation, one can assume these general environmental conditions for the purpose of reconstructing the ancient ecosystem. Wet environments that preserved plant fossils and some invertebrates and small vertebrates in the Morrison can be interpreted as representing local conditions...
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