Young Hoactzins
Where a Dinosaur Sat Down
Tooth of Mastodon and of Mammoth
Thespesius, a Common Herbivorous Dinosaur of the Cretaceous
The Track of a Three-toed Dinosaur
The Three Giants, Phororhacos, Moa, Ostrich
The Missourium of Koch, from a Tracing of the Figure Illustrating Koch's Description
The Mastodon
The Mammoth as Engraved by a Primitive Artist on a Piece of Mammoth Tusk
The Horned Ceratosaurus, a Carnivorous Dinosaur
The Development of the Horse
Skull of Phororhacos Compared with that of the Race-horse Lexington
Skull of Ceratosaurus
Skeleton of Triceratops
Skeleton of the Modern Horse and of His Eocene Ancestor
Skeleton of the Mammoth in the Royal Museum of St. Petersburg
Skeleton of a Radiolarian Very Greatly Enlarged
Pterichthys, the Wing Fish
Phororhacos, a Patagonian Giant of the Miocene
Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern Bird
Leg of a Horse Compared with that of the Giant Moa
Koch's Hydrarchus. Composed of Portions of the Skeletons of Several Zeuglodons
Hesperornis, the Great Toothed Diver
Cephalaspis and Loricaria, an Ancient and a Modern Armored Fish
Archæopteryx
A Tooth of Zeuglodon, One of the 'Yoke Teeth,' from which it derives the name
A Single Vertebra of Brontosaurus
A Hind Leg of the Great Brontosaurus, the Largest of the Dinosaurs
A Great Sea Lizard Tylosaurus Dyspelo