Note its general resemblance, except for size, to the microscopic summer ditch-water life of to-day.
Skulls of Iguanodont and Trachodont Dinosaurs
Skulls of Horned Dinosaurs. The lower row, Ceratops, Styracosaurus, Monoclonius, are from the Middle Cretacic (Belly River formation) of Alberta; Anchiceratops is from the Upper Cretacic (Edmonton formation) of Alberta; Triceratops and Torosaurus from the uppermost Cretacic (Lance formation) of Wyoming.
Skulls of Dinosaurs, illustrating the principal types
This animal probably reached the maximum of size and of development of teeth and claws of which its type of animal mechanism was capable. Its bulk precluded quickness and agility. It must have been designed to attack and prey upon the ponderous and slow moving Horned and Armored Dinosaurs with which its remains are found, and whose massive cuirass and weapons of defense are well matched with its teeth and claws. The momentum of its huge body involved a seemingly slow and lumbering action, an inertia of its movements, difficult to start and difficult to shift or to stop.
Outline sketch restoration of Triceratops, from the mounted skeleton in the National Museum.
Outline Restorations of Dinosaurs
Hind Feet of Dinosaurs, to show the three chief types (Theropoda, Orthopoda, Sauropoda)
The Largest Known Dinosaur. Sketch reconstruction of Brachiosaurus, from specimens in the Field Museum in Chicago, and the Natural History Museum in Berlin.