Floor Scrape Marks Trace at Frenzied Intercourse Habits of Dinosaurs

Scientists say they’ve found proof of a frenzied mating ritual by dinosaurs: lengthy grooves within the floor etched by the pawing of clawed ft.

Such conduct is seen these days in some birds, and the invention means that two-legged, meat-consuming dinosaurs referred to as theropods did it about one hundred million years in the past, the researchers stated.

Ground Scrape Marks Hint at Frenzied Sex Habits of Dinosaurs Ground Scrape Marks Hint at Frenzied Sex Habits of Dinosaurs

Martin Lockley (R) and Ken Cart kneeling beside two giant Cretaceous-age scrapes from western Colorado which are the primary bodily-reported proof that enormous theropod dinosaurs engaged in courtship conduct. AFP / Nature / M.Lockley

Martin Lockley of the College of Colorado Denver stated the dinosaurs, in all probability males, apparently gathered in teams and "went loopy scraping" with their clawed, three-toed ft to draw mates. The beasts have been constructed roughly like smaller variations of a T. rex. Footprints close to the grooves recommend quite a lot of physique lengths, as much as about sixteen ft from snout to tip of the tail. The grooves they carved are as much as 6 ft lengthy.

The ritual would have been entertaining to observe, Lockley stated in an interview. "These animals would have been actually frenzied."


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Lockley, an emeritus professor of geology, is an writer of a paper on the invention launched Thursday by the journal Scientific Stories.

The grooves have been discovered at three websites in western Colorado and one other simply west of Denver.

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Dinosaur skilled Thomas Holtz Jr. of the College of Maryland, who did not take part within the work, stated it is affordable to assume that theropods created the grooves. However was it for mating? Holtz stated he wasn’t satisfied that the brand new paper had sufficiently dominated out different explanations. However he added that there isn’t any specific proof for rejecting the mating concept.

"No matter conduct is being recorded right here, it’s an expression of the truth that dinosaurs_like all animals_did greater than hunt and assault and devour and battle and all that restricted set of behaviors that in style tradition typically portrays," Holtz wrote in an e mail.