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Tyrannosaurus Rex
Scientists Think They Found a ‘Pregnant’ T. Rex Fossil
Is that giant T-rex fossil you saw at the museum a boy or a girl? Even for paleontologists who devote their lives to studying dinosaur fossils, it’s a tough call, because the bones themselves rarely give away a dinosaur’s sex.
New Dinosaur, a Tiny Tyrannosaur, Discovered in Arctic
A smaller relative of Tyrannosaurus rex, the newly discovered Nanuqsaurus hoglundi, thrived in the extreme cold.
