An unusual skeleton discovered in fossilized dinosaur yak might not be the creature we thought it was after all.
The find contains 'unparalleled' fossilized feathers and skin, anatomical features that aren't usually preserved in dinosaur remains.
Famous fossil location in South Dakota yields the 17-foot 'Dakotaraptor.'
Sixty-six million years ago, a tyrannosaur may have sunk its sharp and serrated teeth into the bones of another tyrannosaur.
The creature had a massive wingspan of about 4.5 feet and sported a total of 110 teeth.
The skeleton dates to about 62.5 million to 62 million years ago, making it the oldest modern bird in North America alive after the dinosaurs.
The distinctive creature lived 76 million years ago, during the Cretaceous, in a modern-day Utah that looked more like Louisiana bayou country.
Tiny organs, fur, spines and a fungal hair infection are still intact in a Cretaceous Era fossil.
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