Map of Mongolia from: Norell and Dingus, p. 4   Through an improbable and fortuitous set of circumstances, Colgate University came to possess one of the first dinosaur eggs ever discovered, yielding the first definitive evidence of how some dinosaurs reproduced. Our 80 million-year-old specimen is from the first clutch of dinosaur eggs found at the Flaming Cliffs during Roy Chapman Andrew's 1923 expedition to the Gobi Desert of Mongolia.