In The Groove: Massive Scrape Marks In Ground Linked To Mating Dinosaurs

· Jan. 7, 2016, 7:49 pm

Scientists say they've discovered evidence of a frenzied mating ritual by dinosaurs: long grooves in the ground etched by the pawing of clawed feet.

Some birds show that behavior now, and the researchers believe the discovery shows that two-legged, meat-eating dinosaurs did it about 100 million years ago.

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