Dinosaurs: Most got extinct in the mass extinction event, about 65 million years ago. Today's birds and reptiles are generally believed to be the descendants of the dinosaurs.Pigs: They walk on earth today.
Dinosaurs first appeared around 230 million years ago and are popularly said to have gone extinct 65.5 million years ago. However, in a sense dinosaurs are still alive since most paleontologists now classify birds as dinosaurs.
No, when dinosaurs were around, the only mammals at all were little tiny animals that looked like shrews.
they walk
Yes because when we are not exist yet dinosaurs rule the earth but today there are no dinosaurs here.
No, dinosaurs are neither a hypothesis nor is there a "hypothesis of Earth".
to walk
The duration of When Dinosaurs Ruled the Earth is 1.6 hours.
Dinosaurs
pigs use quadrupedal locomotion.
Dinosaurs first appeared in the tertiary stages of the Earth. Tertiary was when the dinosaurs ruled the earth. Then there was jurassic and then creteacious
Dinosaurs that walk on two legs are called "bipeds". The term applies to all animals that walk on two legs.
Dinosaurs evolved on land and never lived in aquatic habitats. They existed between 225 and 65.5 million years ago, with the exception of birds, a group of dinosaurs that thrives to this day.