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Dilophosaurus is a genus of theropod dinosaur. It contains a single known species, Dilophosaurus wetherilli, known from fossil remains found in the Kayenta Formation of Arizona....
This species lived during the early Cretaceous Period, about 115–108 million years ago.
Corythosaurus is a genus of hadrosaurid “duck-billed” dinosaur from the Upper...
They lived about 150 million years ago, the Tithonian age of the late Jurassic period, in what is now Europe.
Coelophysis is an genus of coelophysid theropod dinosaur that lived approximately 203 to 196 million years ago during the latter part of the...
The evolution of the horse, a mammal of the family Equidae, occurred over a geologic time scale of 50 million years, transforming the small, dog-sized, forest-dwelling Eohippus into the modern horse.
How new species are created is at the core of the theory of evolution. Mammals may be a good example of how sex chromosome change drove major groups apart.
Bony skull ornaments appeared in most rapidly growing species, new research suggests.
Everyone is once again asking, “Can we clone dinosaurs?” The answer is easy: No. But there’s more to the story than just cloning.