‘Dinosaurs Among Us’ at American Museum of Natural History, Selected by Mark Dion

Oviraptorosaurs are cousins to T. rex, but closer cousins to modern birds. They are fairly small, birdlike dinosaurs, most with toothless beaks, wishbones, and skulls filled with air pockets. Some have even been found sitting on eggs, in the brooding posture characteristic of modern birds.

ZHAO CHUANG/COURTESY PEKING NATURAL SCIENCE ORGANIZATION