- 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