Temporal range: Upper Cretaceous
Velociraptor had one sickle-shaped claw on its foot which measured 6.5 centimeters along its length, and a smaller one on each hand. Velociraptor was warm blooded and had feathers.
In September 2007 researchers found quill knobs on the forearm of a Velociraptor found in Mongolia. These bumps on bird wing bones show where feathers anchor, and their presence on Velociraptor indicate it too had feathers.
Turner and colleagues interpreted the presence of feathers on Velociraptor as evidence that the ancestors of dromaeosaurids could fly, making Velociraptor and Deinonychus secondarily flightless. This idea has since been discarded; the unmodified forearms count against it. Therefore, the feathers in the ancestors of Velociraptor had another function. The feathers of the flightless Velociraptor may have been used for display, for covering their nests while brooding.
Specimens from two species have been found:
Films such as Jurassic Park and some of The Land Before Time films helped make Velociraptor popular. However, the raptors in Jurassic Park were far larger than the real thing. They were the size of Deinonychus, a larger member of the same clade. The films also exaggerated its probable intelligence.
- Velociraptor = 'swift robber', sometimes called 'raptor' for short.
- Godefroit, Pascal et al 2008. A new species of Velociraptor (Dinosauria: Dromaeosauridae) from the Upper Cretaceous of northern China. Journal of Vertebrate Paleontology 28 (2): 432–438. 
- Milner, Angela 2002. Dinobirds: from dinosaurs to birds. Natural History Museum, London.
- Gee, Henry 2000. Deep time: cladistics, the revolution in evolution. Fourth Estate, London. Chapter 6 "The being and becoming of birds" is about the origin of birds.
- Benton M.J. et al. 2008. The remarkable fossils from the Early Cretaceous Jehol biota of China and how they have changed our knowledge of Mesozoic life. Proceedings of the Geological Association 119, p209–228.
- Dong Zhiming 1988. Dinosaurs from China. transl. Angela Milner, BM(NH)/China Ocean.
- Turner A.H.; Makovicky P.J.; Norell M.A. 2007. Feather quill knobs in the dinosaur Velociraptor. Science 317: 1721. PMID 17885130.