Dino's Dance floor found in Utah

There are so many prints - more than 1,000 - that geologists have dubbed the site "a dinosaur dance floor".

Located within the Vermilion Cliffs National Monument, the marks were long thought simply to be potholes gouged out of the rock by years of erosion.

A paper describing the 190-million-year-old footprints is published in the palaeontology journal Palaios.

"Get out there and try stepping in their footsteps, and you feel like you are playing the game 'Dance Dance Revolution' that teenagers dance on," says Professor Marjorie Chan from the University of Utah.

"This kind of reminded me of that - a dinosaur dance floor - because there are so many tracks and a variety of different tracks."

"There must have been more than one kind of dinosaur there," she adds. "It was a place that attracted a crowd, kind of like a dance floor."