DENVER — Talk about a creature feature: A bizarre boomerang-headed amphibian that burrowed in a seasonal pond in what is now Texas often met its doom in the jaws of a reptilian fin-backed mammalian ...
VANCOUVER — With fangs and the first sawlike teeth on Earth, the biggest predator in the swamps of the early Permian Period ate anything it wanted. But when Dimetrodon waddled on land 290 million ...
Dinosaurs are often considered the most impressive and dominant creatures that ever lived on Earth. But they were not the first ones to rule the planet. Long before the dinosaurs appeared, there were ...
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