Dromaeosaurs

Dromaeosaurs

Dromaeosauridae is a family of bird-like theropod dinosaurs. They were small- to medium-sized feathered carnivores that flourished in the Cretaceous Period. The name Dromaeosauridae means 'running lizards', from Greek dromeus (δρομευς) meaning 'runner' and sauros (σαυρος) meaning 'lizard'. In informal usage they are often called raptors (after Velociraptor), a term popularized by the film Jurassic Park; a few types include the term "raptor" directly in their name and have come to emphasize their supposed bird-like habits.

Dromaeosaurid fossils have been found in North America, Europe, Africa, Japan, China, Mongolia, Madagascar, Argentina, and Antarctica. They first appeared in the mid-Jurassic Period (late Bathonian stage, about 164 million years ago) and survived until the end of the Cretaceous (Maastrichtian stage, 65.5 ma), existing for over 100 million years, up until the Cretaceous–Paleogene extinction event. The presence of dromaeosaurs as early as the Middle Jurassic has been confirmed by the discovery of isolated fossil teeth, though no dromaeosaurid body fossils have been found from this period.

Read more about Dromaeosaurs:  Description, Technical Diagnosis, In Popular Culture

Other articles related to "dromaeosaurs":

Sinornithosaurus
... analysis which demonstrated that it is basal, or primitive, among the dromaeosaurs ... Together these two facts demonstrate that the earliest dromaeosaurs were more like birds than the later dromaeosaurs were ...
NGMC 91
... a phylogenetic analysis which demonstrated that it is basal, or primitive, among the dromaeosaurs ... Together these two facts demonstrate that the earliest dromaeosaurs were more like birds than the later dromaeosaurs were ...
Dromaeosauridae - Classification - Alternative Theories and Flightlessness
... First, since they had feathers, dromaeosaurs (along with many other coelurosaurian theropod dinosaurs) are “birds” under traditional definitions of ... and Avialae.) At least two schools of researchers have proposed that dromaeosaurs may actually be descended from flying ancestors ... Hypotheses involving a flying ancestor for dromaeosaurs are sometimes called “Birds Came First” (BCF) ...
Sinornithosaurus
... a phylogenetic analysis which demonstrated that it is basal, or primitive, among the dromaeosaurs ... Together these two facts demonstrate that the earliest dromaeosaurs were more like birds than the later dromaeosaurs were ...