Carnotaurus is one of the few known theropod dinosaurs with horns on its head. elaborate
Argentinosaurus's heart, if it were proportionally similar to a giraffe's, would have needed to be the size of a small car to pump blood to its head. elaborate
Brachiosaurus's nostrils were located on top of its head, not at the end of its snout. elaborate
Herrerasaurus, one of the earliest known dinosaurs, lived during the Late Triassic period, predating many of the more well-known dinosaur groups. elaborate
Coelophysis, a dinosaur from the Triassic period, had surprisingly hollow bones, making it lightweight and agile. elaborate
Ornithischians, the bird-hipped dinosaurs, had beaks! elaborate