#Study sheds light on the evolution of the earliest dinosaurs
“#Study sheds light on the evolution of the earliest dinosaurs” Microscopic crystals of the uranium-bearing mineral zircon were separated from the rock samples and analyzed by the U-Pb isotopic technique at the MIT Isotope Lab. These zircons yielded a precise age of 221.82 ± 0.10 Ma for the upper Ischigualasto Formation. Credit: Courtesy of the…