About 100 million years ago, male dinosaurs entered “mate arenas” in Colorado and danced their minds to attract women, new research suggests.
Researchers have discovered a series of mating display scuffs preserved on the rock surface of a dinosaur ridge in Jefferson County, Colorado. The state is known for its dinosaur track sites, and previous studies suggest that dinosaurs have returned to these mating spots over consecutive breeding seasons.
The latest mark identified in the Dinosaur Ridge suggests that multiple individuals took part in exhibit behavior in which they mated there during the Cretaceous period (145-66 million years ago), and according to a new study published online on June 4th in the Cretaceous Research on June 4th, the ridge can be categorized as a “display arena” or Lek.
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The scape was left by Teropods, a group of bipedal dinosaurs, including the Tyrannosaurus Rex. Caldwell Buntin, the lead researcher and lecturer in Earth Science at Old Dominion University, Virginia, told Live Science that there is no direct evidence of which species left the mark, but it is a small therapy that is modern-day ostritch-sized.
Researchers believe the dinosaurs were shown to potential companions by slamming their claws deep into the sand, dragging them, and kicking the sand behind them. Bunting pointed out that animals alternate between two feet when they kick the sand and make different movements.
“We can say that we’ve had two movements so far, one walking backwards and the other moving left and right,” Bunting said in an email. “If they are really excited, they step back a few feet behind and repeat the movement, which usually erases the back half of each previous scuff.
Related: Mystical “Runner” Dinosaur Signs There are more Jurassic secrets to unlock under the West of the US
“If you move left or right, they take one or two steps, face in the same direction and repeat the scrape movement,” Bunting said. “This is usually recorded by one half of the scuffs if two sets of scuffs are next to each other or take a half step.”
Wrecking is a common behavior among modern birds. For example, the male great sage (Centrocercus uophasianus) performs an elaborate sunrise display every spring, inflated air sacks on the chest, and generally puts things up for the attention of women.
The Rek of the Dinosaur Ridge dates back to the Cenomanian period (105 million to 93.3 million years ago) during the Cretaceous period. Bunting and his colleagues used drones to capture high-resolution images of the site and identified a total of 25 new scuffs on two surfaces of the ridge.
“It was so exciting to see the new scuffs in the images when we processed it!” Bunting said. “Originally, only two or three of the new traces were immediately revealed, but within an hour, I noticed almost 12 new scuffs. It was very surreal.”
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