About: Spec Dinosauria: Deinonychosauria

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About: Spec Dinosauria: Deinonychosauria Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Proposed mitochondrial divergence times of living deinonychosaur lineages superimposed against the first appearance in the Cenozoic fossil record (denoted by a claw icon). Proposed relationships in this study were based purely on biochemical criteria. Perhaps the most famous of all carnivorous dinosaurs (with the possible contenders being the tyrannosauroids and sauropods) deinonychosaurs, those of the 'terrible claws', have been a common and successful tribe of carnivores since the early Cretaceous. Creatures like Deinonychus and Velociraptor hunted the ancient world, and most modern day deinonychosaurs have changed little since then.

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rdfs:label	Spec Dinosauria: Deinonychosauria
rdfs:comment	Proposed mitochondrial divergence times of living deinonychosaur lineages superimposed against the first appearance in the Cenozoic fossil record (denoted by a claw icon). Proposed relationships in this study were based purely on biochemical criteria. Perhaps the most famous of all carnivorous dinosaurs (with the possible contenders being the tyrannosauroids and sauropods) deinonychosaurs, those of the 'terrible claws', have been a common and successful tribe of carnivores since the early Cretaceous. Creatures like Deinonychus and Velociraptor hunted the ancient world, and most modern day deinonychosaurs have changed little since then.
dcterms:subject	Africa Theropods Theropods Africa Europe Asia Animals Europe Animals Asia Carnivores Dinosaurs Carnivores dbkwik:resource/AzHYB0wwRHnGtySOdN8TXA== Coelurosaurs North America Coelurosaurs North America dbkwik:resource/hojfAK_OJ0TeUI9V4Hif8A== Spec Dinosauria Dinosaurs Spec Dinosauria dbkwik:resource/KS3WBPTvH5WRUBAJ6AnT9A== dbkwik:resource/OzBDrzOqmVX3xB3FyMKqcg== South America South America Maniraptorans Maniraptorans Dromaeosaurs Dromaeosaurs
abstract	Proposed mitochondrial divergence times of living deinonychosaur lineages superimposed against the first appearance in the Cenozoic fossil record (denoted by a claw icon). Proposed relationships in this study were based purely on biochemical criteria. Perhaps the most famous of all carnivorous dinosaurs (with the possible contenders being the tyrannosauroids and sauropods) deinonychosaurs, those of the 'terrible claws', have been a common and successful tribe of carnivores since the early Cretaceous. Creatures like Deinonychus and Velociraptor hunted the ancient world, and most modern day deinonychosaurs have changed little since then. With the exception of the tree-climbing abronychosauroids, Spec's deinonychosaurs all follow the body plan laid out by their ancestors. They are bipedal, with long necks and arms relative to the body. The tail is also long, and stiffening tendons turn is into an inflexible pole that the animal uses for balance while running. The pubis (hip) is swept-back in the manner of a bird, and the head and hands are also birdlike. Indeed, these land-bound predators may be the descendants of early fliers, who gave up their wings over 100 million years ago. All of these adaptations for speed and maneuverability aside, a deinonychosaur's chief claim to fame are its claws; their hands are armed with three long, curving talons and each foot bears an additional 'sickle claw' on the inner toe. These toes are hyper-extendable, jointed so that they draw the claws away from the ground and thus avoid blunting the talons' tips as they walk. The whole arrangement is similar to that of an RL cat, whose retractable claws may be extended to tear or hold prey. Most deinonychosaurs are similar to cats in their hunting style, preferring to stalk and ambush prey rather than pursue it over long distances. In our home time-line, deinonychosaurs died out, along with all other non-avian dinosaurs, at the end of the Cretaceous period. In Spec, of course, they survived, and seem to have carried on with little change into the Eocene. At his point, when environmental shifts were killing off many large predators around the globe, the adaptable deinonychosaurs quickly diversified to fill the vacant niches. Fossils from this time are frustrating vague, but from this confusion emerge the four great groups of modern deinonychosaurs.

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