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Dromaeosauridae (/ ˌ d r ɒ m i. ə ˈ s ɔːr ɪ d iː /) is a family of feathered coelurosaurian theropod dinosaurs. They were generally small to medium-sized feathered carnivores that flourished in the Cretaceous Period .
Dromaeosaurus is the type genus of both Dromaeosauridae and Dromaeosaurinae, which include many genera with similar characteristics to Dromaeosaurus such as possibly its closest relative Dakotaraptor. Dromaeosaurus was heavily built, more so than other dromaeosaurs that are similar in size, like Velociraptor.
Dromaeosauroides is a genus of dromaeosaurid theropod dinosaur from the Early Cretaceous of what is now Denmark and possibly also England.It was discovered in the Jydegaard Formation in the Robbedale valley, on the island of Bornholm in the Baltic Sea.
The original definition of Eudromaeosauria was a node-based definition. It was defined as the least-inclusive clade containing Utahraptor ostrommaysi, Velociraptor mongoliensis, Deinonychus antirrhopus, and Saurornitholestes langstoni. The apomorphic features of the group were left unresolved at the time of its naming. [6]
Utahraptor is a member of the family Dromaeosauridae, a clade of theropod dinosaurs commonly known as "raptors". Utahraptor is the largest known genus in the family and belongs to the same clade of other notable dinosaurs such as Velociraptor , Deinonychus , or Dromaeosaurus .
Unenlagia (meaning "half-bird" in Latinized Mapudungun) is a genus of dromaeosaurid theropod dinosaur that lived in South America during the Late Cretaceous period. [1] The genus Unenlagia has been assigned two species: U. comahuensis, the type species described by Novas and Puerta in 1997, [1] and U. paynemili, described by Calvo et al. in 2004.
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Deinonychosaurian theropods, especially members of the family Dromaeosauridae, are known for their recurved, sickle-shaped claw on the second toe being held off the ground, and thus not preserved in the trackway. This causes their footprints to preserve only two of their toes, making the deinonychosaurian tracks functionally didactyl (two-toed).