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In Deinonychus, the antorbital fenestra, a skull opening between the eye and nostril, was particularly large. [31] Size compared with a human. Deinonychus possessed large "hands" with three claws on each forelimb. The first digit was shortest and the second was longest.
The discovery of the Deinonychus fossils is considered one of the most important fossil finds in history. [22] [24] Deinonychus was an active predator that clearly killed its prey by leaping and slashing or stabbing with its "terrible claw", the meaning of the animal's genus name. Ostrom also suggested that it had hunted in packs.
In all, 20% of Tenontosaurus fossils are found in close proximity to Deinonychus, and several scientists have suggested that this implies Deinonychus was the major predator of Tenontosaurus. Adult Deinonychus , however, were much smaller than adult Tenontosaurus , and it is unlikely a single Deinonychus would have been capable of attacking a ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Family of theropod dinosaurs Dromaeosaurids Temporal range: Cretaceous Pre๊ ๊ O S D C P T J K Pg N A collection of dromaeosaurid fossil skeletons. Clockwise from upper left: Deinonychus antirrhopus (a heavily built eudromaeosaur), Buitreraptor gonzalezorum (a long-snouted unenlagiine ...
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Deinonychosauria is a clade of paravian dinosaurs which lived from the Late Jurassic to the Late Cretaceous periods. Fossils have been found across the globe in North America, Europe, Africa, Asia, South America, and Antarctica, [2] with fossilized teeth giving credence to the possibility that they inhabited Australia as well. [3]