Troodon formosus, a small North American theropod dinosaur, incubated its eggs in a similar way to brooding birds, according to paleontologists at the University of Calgary and Montana State University. Troodon formosus Using egg clutches found in Alberta and Montana, the researchers closely examined the shells of fossil Troodon eggs. In a paper published in the journal Paleobiology, they concluded that Troodon, which was known to lay its eggs almost...