dinosaurs

Reptiles, now extinct, that were the dominant life form on Earth for many millions of years. The name dinosaur comes from the Greek words for “monstrous lizard.” Dinosaurs became extinct suddenly, about sixty-five million years ago. Scientists now believe that their extinction was caused by the impact of a large asteroid on the Earth.

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Some dinosaurs were very large and had small brains — factors that may in part have led to their extinction. The term is often used to refer to something or someone that is antiquated and unable to adapt to change: “The old cavalry generals couldn't adjust to the use of tanks — they became dinosaurs.”

Some scientists believe that modern birds are the descendants of dinosaurs.

Commonly known dinosaurs include Tyrannosaurus rex, Brontosaurus, Stegosaurus, and Triceratops.

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Example Sentences

Examples have not been reviewed.

Preview the return of dinosaurs, Dexter and Lena Dunham to TV.

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The discovery, published in Nature, is a window into how tyrannosaurs evolved to become powerful predators that terrorised North America and Asia until the end of the reign of the dinosaurs.

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Stating the obvious a bit... but there was no shortage of dinosaurs in the first full trailer for Jurassic World Evolution 3.

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As it turns out, the only living descendants of the dinosaurs also seem to combine in complex ways to produce an array of meanings.

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Sauropods, the inspiration for Boom Boom, are one of a few species of dinosaurs that paleontologists say lived in New Zealand.

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Dinosaur National Monument dinothere

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