dinosaurs

Cultural  

1. 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.

Example Sentences

For more than two centuries, paleontologists have studied a group of plant eating dinosaurs known as Iguanodontia.

From Science Daily

It is primarily known for its coal mines, and also the discovery of dinosaur fossils - with Tumbler Ridge marketing itself as the land of dinosaurs and waterfalls to attract tourists.

From BBC

At just about half a meter long, Foskeia ranks among the smallest known ornithopod dinosaurs.

From Science Daily

They relied on software commonly used to analyze modern ecosystems to map all possible feeding connections among dinosaurs, other animals, and plants.

From Science Daily

Some tracks may belong to meat eating predators, others to plant eating dinosaurs, and some have even raised questions about whether early bird species were involved.

From Science Daily