Andy travels back 145 million years to the time of Allosaurus - a massive meat-eating dinosaur that roamed the salt flats of North America.
In 1989, paleontologist Darren Tanke suggested that similar breaks were the result of mating as one dinosaur mounted the ...
A golden era in dinosaur science is driving this fascination with dinosaurs. Around 1,400 dinosaur species are now known from ...
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