New dinosaurs include birds Locustella chengi and Archaeornithura meemannae and dromaeosaurid Saurornitholestes sullivani.
New studies came out on the function of the alula in flight, the development of the avian snout and hallux, and the phylogeny of hesperornithines. Supposed sexual dimorphism in Protoceratops andrewsi and gregariousness in the Eubrontes trackmakers of Hartford Basin are reevaluated and found to be unconvincing. Swimming traces from stegosaurs, an unusual dromaeosaurid track morphology, and a new specimen of Allosaurus with multiple pathologies are described. The trace fossil Wupus agilis is found to belong to large birds rather than other types of theropods. Nesting site fidelity is established in multiple new troodont nest specimens.