LYCOS RETRIEVER 
Dinosaurs
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Dinosaurs are one of the most varied animals in terms of apperance. Ranging from 20 centilitres wide to 30 megametres tall, 1 dinousaur is practically unrecognisable from the next. The only cohesive features between breeds are their hind legs the size of ice-breakers and their bright green scrotal tusks, visible only during football season. The real truth about the dinosaur that they never want you to forget is that their sexual organs are always showing. Even though they try to hide these things with "scales", the females aint buying it, and ... the Lesbian orientation was born. Then the male dinosaurs had no one to satisfy their "urges", and thus Monopoly and Taboo was born.
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Dinosaurs (including birds) are archosaurs, like modern crocodilians. Archosaurs' diapsid skulls have two holes, called temporal fenestrae, located where the jaw muscles attach, and an additional antorbital fenestra in front of the eyes. Most reptiles (including birds) are diapsids; mammals, with only one temporal fenestra, are called synapsids; and turtles, with no temporal fenestra, are anapsids. Anatomically, dinosaurs share many other archosaur characteristics, including teeth that grow from sockets rather than as direct extensions of the jawbones. Within the archosaur group, dinosaurs are differentiated most noticeably by their gait. Dinosaur legs extend directly beneath the body, whereas the legs of lizards and crocodylians sprawl out to either side.
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Dinosaurs are further classified into some common groupings. In the saurischian dinosaurs, some were theropods [Gr.,=beast feet], a group sharing hind feet with only three functional toes (e.g., the carnivorous bipeds Tyrannosaurus, Velociraptor, Deinonychus, and possibly the living birds); others were sauropods [Gr.,=lizard feet] with small heads and long necks (e.g., the herbivorous quadrupeds Apatosaurus [Brontosaurus] and Diplodocus). Among the ornithischians, there were ornithopods (bird-footed dinosaurs), such as Iguanodon; thyreophorans (armored dinosaurs), such as Stegosaurus and Ankylosaurus; and ceratopsians (horned dinosaurs), such as Triceratops. The total number of dinosaur genera that existed is unknown; new species are discovered every year, but some species, on further examination, are found to be redundant with earlier finds. One estimate of the possible number of distinct genera exceeds 1,800.
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Dinosaurs evolved from a group of early reptiles called archosaurs that first arose during the early Triassic. Among the earliest archosaurs were many predatory reptiles that became dominant in the Triassic. Another prevalent group were the therapsids, the mammal-like reptiles from which mammals evolved. The early dinosaurs were outnumbered by these groups.
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Dinosaurs became extinct 65 million years ago, but lizards are still a common sight at Dinosaur National Monument. The small, inquisitive reptiles have endured on Earth for more than 300 million years, far outlasting their giant cousins.
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Dinosaurs were immensely varied, and included both herbivores and carnivores. Although many have been found in the fossil record, paleontologists expect that they have barely scratched the surface of the vast superorder that the dinosaurs encompassed.[4]
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Dinosaurs