Add Yahoo as a preferred source to see more of our stories on Google. A worthy matchup of big teeth, little brains. Picture this: Two dinosaurs with massive teeth and hulking figures circle each other ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of an adult Nanotyrannus attacking a young T. rex. In the latest episode of a long-standing debate over the ...

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A new study of long-debated dinosaur fossils has found growth patterns inconsistent with those of T. rex, suggesting the bones belong to a distinct species, but other experts aren't convinced. When ...