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by Killing Kittens June 9, 2004
Get the plagiarism mug.A genus of mongolian dromaeosaurid living about 80 million years ago during the late Cretaceous. It was a small and nimble creature about 6 feet long, bird-like in structure, with a narrow, flattened head and an enlarged "killing claw" on the second toe. The arms ended in three-fingered hands with flexible wrists that could be "folded" like those of a bird.
They were probably quite social as well, and there is also evidence to support that they were nasty to each other as well as their prey. An overwhelming piece of evidence suggests that Velociraptor preyed on the ceratopside Protoceratops, as one specimen was found gripping the head frill of the latter with it's foot claw in the creature's belly. The Protoceratops, in turn, was apparently biting the Velociraptor's arm with it's horny beak and ramming it's bony head into the raptor's chest. What calamity claimed the lives of both creatures is unknown.
Velociraptor, of course, was popularized by the Jurassic Park films and portrayed inaccurately. The so-called raptors in the films are much too big (Deinonychus-sized), would almost certainly have had feathers, and were not as fast as cheetahs or as smart as monkeys. Instead, raptors may have been about as smart as birds of prey.
Other Dromaeosaurid genera include Deinonychus, Dromaeosaurus, Utahraptor, Adasaurus, Variraptor, Megaraptor, Saurornitholestes, Sinornithosaurus, Bambiraptor, and Rhahonavis.
They were probably quite social as well, and there is also evidence to support that they were nasty to each other as well as their prey. An overwhelming piece of evidence suggests that Velociraptor preyed on the ceratopside Protoceratops, as one specimen was found gripping the head frill of the latter with it's foot claw in the creature's belly. The Protoceratops, in turn, was apparently biting the Velociraptor's arm with it's horny beak and ramming it's bony head into the raptor's chest. What calamity claimed the lives of both creatures is unknown.
Velociraptor, of course, was popularized by the Jurassic Park films and portrayed inaccurately. The so-called raptors in the films are much too big (Deinonychus-sized), would almost certainly have had feathers, and were not as fast as cheetahs or as smart as monkeys. Instead, raptors may have been about as smart as birds of prey.
Other Dromaeosaurid genera include Deinonychus, Dromaeosaurus, Utahraptor, Adasaurus, Variraptor, Megaraptor, Saurornitholestes, Sinornithosaurus, Bambiraptor, and Rhahonavis.
by Killing Kittens June 9, 2004
Get the velociraptor mug.Spinosaurus aegyptiacus was a highly unusual theropod dinosaur that lived in Egypt and Morocco around 90 million years ago. It is distinctly different from other carnosaurs in the respect that it has an unusually high vertibrae on it's back that give it a giant fin or sail, about 6 feet high, the purpose of which is not understood. It may have served as a cooling device, for heat dissipation or a sexual signal. Interestingly enough, an iguanodont from the same place at almost the same time, Ouranosaurus, had a similar sail.
The jaws of Spinosaurus are narrow and crocodile-like, and the teeth are straight and not serrated like those of Tyrannosaurus. This feature is very similar to the theropods Baryonyx and Suchomimus, both of which were probable fish-eaters.
Spinosaurus is known only from fragments, the first specimen was unfortunately destroyed during World War II. It is estimated that the beast was collosal, perhaps measuring 50 feet in length, but these are only estimates. It seems that although the creature may have been longer than Tyrannosaurus, it had a more slender build.
Pound for pound, both relatively and absolutely, Tyrannosaurus rex is the more formidable animal, despite what the movie Jurassic Park 3 depcits. T.rex would be heavier, more powerfully musculed, and have a much stronger bite than Spinosaurus.
The jaws of Spinosaurus are narrow and crocodile-like, and the teeth are straight and not serrated like those of Tyrannosaurus. This feature is very similar to the theropods Baryonyx and Suchomimus, both of which were probable fish-eaters.
Spinosaurus is known only from fragments, the first specimen was unfortunately destroyed during World War II. It is estimated that the beast was collosal, perhaps measuring 50 feet in length, but these are only estimates. It seems that although the creature may have been longer than Tyrannosaurus, it had a more slender build.
Pound for pound, both relatively and absolutely, Tyrannosaurus rex is the more formidable animal, despite what the movie Jurassic Park 3 depcits. T.rex would be heavier, more powerfully musculed, and have a much stronger bite than Spinosaurus.
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