The state line between Arizona and Utah recently became the main focus of many geologists, as there have been discovered thousands of prehistoric animal tracks. Because of the numerous tracks, the area was named the Dinosaur Dance Floor.

The research site spreads over three quarters of an acre and will provide new details about the dinosaurs’ life more than 190 million years ago.

"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," said Marjorie Chan, a geology professor and co-author on the study of the site. "This kind of reminded me of that -- a dinosaur dance floor -- because there are so many tracks and a variety of different tracks."

The high number of footprints found on the site at the Vermillion Cliffs National Monument surprised the researchers, who have a lot of tests to complete over the next few months.

At this point, it is too soon to tell which species left the footprints, but the geologists managed to identify four kinds of tracks. Some measure 16 inches across and present three toes and a heel, while others are smaller and rounder.

Even though the site was found in 2006, the tests demand a lot of attention and the conclusions reached so far are available in a report presented by this month’s issue of the journal Palaios.

The news were received with great enthusiasm by many but there are also some paleontologists who doubt the authenticity of the tracks and demand additional tests and proofs.

"I've observed thousands of [Eubrontes] tracks in early Jurassic rocks of the Colorado Plateau and have never seen one that looked like the one in the news release," said Alan Titus, a paleontologist at Grand Staircase-Escalante National Monument in nearby Kanab, Utah. He added that before reaching a firm conclusion, he will visit the site to see the tracks for himself and make some measurements.

"What they're showing here look nothing like Eubrontes in my opinion," said Andrew Milner, a paleontologist at St. George Dinosaur Discovery Site at Johnson Farm in Utah. Still, he is willing to give it a chance adding that "If they do turn out to be tracks, it's really an interesting site—showing what they're doing behavior-wise would be interesting," and concluding that he will surely visit the site.

At a certain point there was a rumor that the track might actually be potholes, created by modern erosion. This explanation was rejected by the study, as the careful inspection proved that "the impressions are ringed by mounds of displaced sand that had to be formed when the sand was soft, before it was turned to rock," as Winston Seiler, graduate student at the University of Utah and responsible for finding the site, explained.

The question that still hasn’t been answered is why there haven’t been found any bones in the area. If such a discovery would be made, the research would go a lot smoother and the results would be a lot more satisfying.