New dinosaurs include birds Xinghaiornis lini and Scytalopus gettyae, sauropods Gannansaurus sinensis, Tataouinea hannibalis, and Overosaurus paradasorum, ceratopsian Nasutoceratops titusi, hadrosaur Canardia garonnensis, and ankylosaur Dongyangopelta yangyanensis.
New studies came out on tooth replacement rates in sauropods, the evolution of bird brains, and growth patterns in ankylosaurs. A juvenile specimen of Bolong yixianensis is described. Sequential problem solving is found in Cacatua goffini. Skull ecomorphology is compared between megaherbivorous dinosaurs of the Dinosaur Park Formation, showing evidence of niche partitioning. A report was published on a Tyrannosaurus rex tooth found embedded in a healed hadrosaur tail. The genome of Parus humilis is sequenced. A study on cranial pathologies in pachycephalosaurs supports the notion that pachycephalosaurs used their heads in agonistic behavior. A review of Cretaceous theropods from Argentina suggests that megaraptorans were tyrannosauroid coelurosaurs and that upper-end size estimates for Ekrixinatosaurus novasi may not be valid, among other things. Olfactory cues are found to be important for navigation in Calonectris borealis.