Deinonychus


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Deinonychus

(dī'nənī`kəs) [Gr.,=terrible claw], swift bipedal carnivorous dinosaurdinosaur
[Gr., = terrible lizard], extinct land reptile of the Mesozoic era. The dinosaurs, which were egg-laying animals, ranged in length from 2 1-2 ft (91 cm) to about 127 ft (39 m).
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 of the early Cretaceous period, approximately 119–93 million years ago. Fossil specimens have been discovered in Montana and Wyoming. Adults were around 10 ft (2.5 m) from head to tail and 1 ft (3 m) high. The second toe of each three-toed foot was modified into a long sickle-shaped claw, and the hands, each finger of which also ended in a claw, were adapted to grabbing prey. Deinonychus is thought to have been a very fast-moving predator. It belongs to the group of saurischian theropods [Gr., = beast feet] that includes TyrannosaurusTyrannosaurus
[Gr.,=tyrant lizard], member of a family, Tyrannosauridae, of bipedal carnivorous saurischian dinosaurs characterized by having strong hind limbs, a muscular tail, and short forelimbs. Tyrannosaurids are theropods, having three toes on the hind feet.
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, VelociraptorVelociraptor
[Gr.,=swift robber], swift bipedal carnivorous dinosaur of the late Cretaceous period. It was relatively small, being approximately 6 ft (1.8 m) long. It was similar to Deinonychus
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, and living birds.
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References in periodicals archive ?
Influenced by "Jurassic Park," the public may think that Deinonychus hunt in groups.
The study focuses on dromaeosaurids, a group of small predatory dinosaurs that include the famous Velociraptor and its larger relative, Deinonychus. Dromaeosaurids are closely related to birds, and are most famous for possessing an enlarged sickle-claw on digit two (inside toe) of the foot.
The raptor Deinonychus, with its mix of bird and dinosaur features, helps tell the story of how dinosaurs evolved into birds.
Deinonychus' claw was about 10 centimeters long and curved through an arc of about 16oo, almost a semicircle.
Another of the show's stars was an animatronic Deinonychus, which is a Velociraptor-like dinosaur, attacking a large but quite helpless Tenontosaurus, which looks like the more well known Diplodocus.
19th century suggestions that birds are closely related to dinosaurs were revived by John Ostrom's 1969 study of Deinonychus. More that 100 correspondences have been found for such dinosaurs and bird anatomy!
When offering a live meal to Deinonychus, the book says one should "throw them into the enclosure and look away."
If you are losing sleep over how to control your deinonychus' gambling habit, having trouble stopping your microraptor wrecking your conservatory or agonising over which species of archaeopteryx would best suit your lifestyle -help is finally at hand.
They find Sylvia, trek across the desert, are kidnapped by nomads, chased by raptors, and teach a rogue band of Deinonychus to fish, and they do indeed discover the Hand.
BEASTLY: Warrington Museum's Hannah Spooner with a Jurassic Park deinonychus; ACCUSED: Paul Burrell
The fossilized remains of a reptile, which came to be called Deinonychus, were found.
Ostrom (1976) postulated that in Deinonychus the distally stiffened tail could have been used as a dynamic stabilizer during acrobatic maneuvers.