Uzi maalum wa kupeana Likes: Comment chochote upate "Like"

Uzi maalum wa kupeana Likes: Comment chochote upate "Like"

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Dinosaurs were the dominant land animals from about 235—66 million years ago, a time spanning most of the Mesozoic Era. The Mesozoic era can be divided into three periods: the Triassic, the Jurassic and the Cretaceous. Before the Mesozoic was the Palaeozoic Era, and after it, the Cenozoic. At the end of the Mesozoic Era, all dinosaurs became extinct and mammals rose to dominate the land, along with the descendants of dinosaurs – birds. This timeline shows each era, the periods it can be divided into, and some of the major groups that evolved
 
There were three major dinosaur groups – sauropodomorphs, theropods and ornithischians – all of which first emerged in the Triassic Period. These dinosaurs triumphed over other animals to become the dominant life form on land during the Late Triassic and Early Jurassic periods
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People who study dinosaurs are called palaeontologists. They learn about animals that lived millions of years ago by studying fossils, as well as using what we know about modern animals, to work out what extinct animals would have been like when they were alive
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