LiveScience.com – A rare fossilized dinosaur nest helps answer the conundrum of which came first, the chicken or the egg, two paleontologists say.
Potholes or tracks? A group of paleontologists visited the northern Arizona wilderness site nicknamed a “dinosaur dance floor” and concluded there were no dinosaur tracks there, only a dense collection of unusual potholes eroded in the sandstone. So the scientist who leads the University of Utah’s geology department says she will team up with the skeptics for a follow-up study.




