Dinosaurs sat on nests like birds, shells reveal[ Fri, 19 Apr 2013 15:19:07 GMT ]By Stephanie PappasLiveScience Dinosaurs laid eggs, of that there is no doubt. But what scientists haven't been as clear on is whether they brooded over their eggs like birds or buried them like crocodiles.Now, a new study finds that at least one dinosaur took a birdlike approach to hatching eggs. Troodon was a small, meat-eating dinosaur that grew to be about 8 feet (2.4 meters) long. The dinosau...