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Dinosaurs
Part 1 of Paper
....nant land animals on Earth. The term was
proposed as a formal zoologic name in 1842 by the British anatomist Sir Richard
Owen, in reference to large fossil bones unearthed in southern England. The
various kinds of dinosaurs are classified in two formal categories, the orders
Saurischia and Ornithischia, within the su.... Part 2 of Paper
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herbivores, but some saurischians were carnivorous. The majority were four-
footed but some ornithischians and all carnivores walked on their hind legs.
Always classified as reptiles, dinosaurs have traditionally been assumed
to have been reptilian in their physiology, cold-blooded, and ectothermic. In
recent years several different lines of evidence have been interpreted as
indicating that dinosaurs may have had warm blood and high rates of metabolism,
comparable to birds and mammals. Evi.... |
| Number of words: 714 - Approximate pages: 3 |
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