A recent study by Keifeng Yu and his colleagues, published in Acta Geologica Sinica, describes the discovery and ...

Hadrosauridae and Tyrannosauridae. At face value, their analysis showed that dinosaur diversity peaked around 76 million years ago, then shrank until the asteroid strike wiped out the nonavian ...

and the fearsome Tyrannosauridae. When they looked at the raw numbers, it seemed to confirm the prevailing view: dinosaur diversity peaked around 76 million years ago, then steadily fell.

Browse 1,800+ tyrannosauridae stock videos and clips available to use in your projects, or search for dinosaur to find more stock footage and b-roll video clips. The Tyrannosaurus Rex dinosaur slowly ...

Firstly, the Allosaurus belongs to a family known as Allosauridae. Meanwhile, the T Rex comes from a family of dinosaurs called Tyrannosauridae. There are 4 species of dinosaurs belonging to the genus ...

Dinosaurs weren't in decline when an asteroid smashed into Earth and wiped them out, scientists say. Instead, the idea that dinosaur diversity was declining before the asteroid struck 66 million ...