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The structures, which date back to the Cretaceous, are comprised of raised earth ridges flanked by parallel troughs, and a type of dinosaur is thought to have dug them in order to catch the attention of females.
they must be signs of sexual displays. Unlike nests, which are usually similar and evenly spaced, these mounds and troughs were irregular in size and spread out in an uneven pattern. Nor was there any of the usual fossil evidence of young, such as eggshells.
originally posted by: intrptr
a reply to: swanne
In the photo provided in the link look close at the left impression, there are crisp toe marks at the top of it…
Ugh, I would have never guessed that one day I'd be arguing about courtship footprints from theropod dinosaurs.