What defines a dinosaur?

1: Any of a group (Dinosauria) of extinct, often very large, carnivorous or herbivorous archosaurian reptiles having hind legs that extend directly beneath the body and comprising mainly terrestrial, two- or four-legged ornithischians (such as ankylosaurs and stegosaurs (and) such as sauropods and…

What type of animal is a dinosaur?

reptile
Dinosaurs are prehistoric reptiles that lived on Earth from about 245 million years ago to the present. Modern birds are a kind of dinosaur because they share a common ancestor with non-avian dinosaurs. Non-avian dinosaurs (all dinosaurs except birds), which are now extinct, varied greatly in shape and size.

What does dinosaur children mean?

The word dinosaur means "terrible lizard", and like lizards and snakes, dinosaurs were reptiles. Some dinosaurs were fierce hunters and carnivores (carnivores), while others were peaceful herbivores (herbivores). These ancient reptiles lived on land, laid eggs and built nests.

What is a dinosaur and what is not?

Dinosaurs are archosaurs, a larger group of reptiles that first appeared about 251 million years ago, near the start of the Triassic period. Some other non-dinosaur reptiles are also archosaurs, including pterosaurs (the now extinct flying reptiles) and modern crocodiles and their ancestors.

Dinosaurs lived about 245 to 65.5 million years ago. They were common during the Triassic, Jurassic and Cretaceous geological periods. Not all species or types of dinosaurs lived at the same time. Nor did they all die out at the same time.

Are dinosaurs a children's show?

Dinosaurs is an American family sitcom television series that aired on ABC from April 26, 1991 to October 19, 1994, with reruns shown on the Disney Channel… Dinosaurs (TV series)

Did the dinosaurs rule the earth?

Dinosaurs were a successful group of animals that appeared between 240 million and 230 million years ago and came to rule the world until about 66 million years ago, when a giant asteroid slammed into Earth. So in that sense only the non-avian dinosaurs went extinct.

What animals live with dinosaurs?

Although birds are believed to be the only living dinosaur descendants, some other animals living today are related to the dinosaurs. Dinosaurs are in the reptile group, which includes turtles, crocodiles, birds, lizards and snakes. Of these groups of animals, second only to birds, crocodiles are probably the most closely related to dinosaurs…

What are all types of dinosaurs?

Currently, there are approximately 700 different dinosaur types that have been named. These can be classified into about 300 different dinosaur genera. Some of the lesser-known genera found include Agnosphitys, Agilisaurus, Brohisaurus, Datousaurus, Echinodon, Ruehleia, and Scelidosaurus.

What are the characteristics of dinosaurs?

Physical features of dinosaurs. Dinosaurs were land animals that lived in almost every part of the world, from tropical regions to deserts. They came in many different sizes and had different body shapes. Some were huge creatures, up to 40 meters long and a hundred tons in weight. Others were as small as a chicken.

Argentinosaurus is arguably the largest dinosaur that ever lived. It measured 120 feet long and 70 feet high. It weighed about 100 tons. Only incomplete fossils were found, which include vertebrae, sacrum, tibia and broken ribs.