Belongs within: Maniraptora. The Troodontidae are a group of small, cursorial theropods known from the Cretaceous of Asia and North America with a single possible representative, Koparion douglassi, also known from the Upper Jurassic (Makovicky & Norell 2004). Certain fragmentary taxa from the late Cretaceous of Europe, such as Bradycneme draculae and Elopteryx nopcsai, have… Continue reading Troodontidae