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