Deinonychus


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to Deinonychus: utahraptor, Spinosaurus

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).
..... Click the link for more information.
 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.
..... Click the link for more information.
, 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
..... Click the link for more information.
, and living birds.
Mentioned in ?
References in periodicals archive ?
Velociraptor and Deinonychus also have a very short, stout metatarsus, suggesting that they had great strength but wouldn't have been very fast runners," he said.
Despite having a sheath 40 times as strong as the keratin that likely enveloped a Deinonychus claw, the model claw didn't rip a gash through the flesh.
Manning's team has now developed a computer model of a Deinonychus claw that combines information gleaned from computerized tomography scans of fossils with data about the strength of bone and keratin.
Dinosaur Encounter will also feature fossil evidence, including impressive dinosaur casts such as a Deinonychus skull, a Velociraptor claw and teeth from a Tyrannosaurus-Rex.
There is no shortage of excitement as a family of Titanosaurs faces off with a group of agile Deinonychus predators.
These newest additions include a 15-foot mother Maiasaura, a duck-billed dinosaur, nurturing her nest of hatching eggs and babies; an Albertosaurus, a close relative to the Tyrannosaurus rex; an Euoplocephalus, an armored dinosaur; 22-foot Tenontosaurus, a dinosaur with a lizardlike tail; two dueling 13-foot Pachycephalosaurus and a pack of flesh-eating, warm-blooded Deinonychus attacking a Tenontosaurus.
Ostrom of Yale University discovered a sickle-clawed terror called Deinonychus.
His 1969 drawing of a running Deinonychus (or "terrible claw," for the lethal, sickle-shaped claws on its feet) shows a "very sleek, fast-moving animal," says Sylvia Czerkas.
Novas discovered was shaped like the smaller "killer" toe claws of Deinonychus (dye-NON-ih-kus) and Velociraptor (veh-LAW-sih-RAP-tur).
We have some evidence that Deinonychus (dye-NON-ih-kus), a human-sized carnivore, may have hunted in packs.