66-million years ago, bird-like dinosaurs laid blue-green eggs
Published September 08, 2017
A type of bird-like dinosaur that lived in what is now China during the Cretaceous period — about 145.5 million to 65.5 million years ago — laid eggs that had a bluish-green tint, the first evidence of pigment in dinosaur eggs, according to a new study.
The well-preserved eggshells belonged to the oviraptorid Heyuannia huangi, and analysis revealed the hints of blue-green color, the researchers said. Oviraptorids were a small-bodied, short-snouted group of dinosaurs with toothless beaks, and are known from fossils found in Mongolia and China.
http://www.livescience.com/60291-blue-green-cretaceous-dinosaur-eggs.html