- Skeleton of a Radiolarian Very Greatly Enlarged
- Where a Dinosaur Sat Down
- The Track of a Three-toed Dinosaur
- A Great Sea Lizard Tylosaurus Dyspelo
- Koch's Hydrarchus. Composed of Portions of the Skeletons of Several Zeuglodons
- A Tooth of Zeuglodon, One of the 'Yoke Teeth,' from which it derives the name
- Nature's Four Methods of Making a Wing - Bat, Pteryodactyl, Archæopteryx, and Modern Bird
- Hesperornis, the Great Toothed Diver
- Young Hoactzins
- Archæopteryx
- Thespesius, a Common Herbivorous Dinosaur of the Cretaceous
- A Hind Leg of the Great Brontosaurus, the Largest of the Dinosaurs
- A Single Vertebra of Brontosaurus
- Skeleton of Triceratops
- The Horned Ceratosaurus, a Carnivorous Dinosaur
- Skull of Ceratosaurus
- Skull of Phororhacos Compared with that of the Race-horse Lexington
- Leg of a Horse Compared with that of the Giant Moa
- The Three Giants, Phororhacos, Moa, Ostrich
- Skeleton of the Modern Horse and of His Eocene Ancestor
- The Development of the Horse
- Skeleton of the Mammoth in the Royal Museum of St. Petersburg
- The Mammoth as Engraved by a Primitive Artist on a Piece of Mammoth Tusk
- Tooth of Mastodon and of Mammoth
- The Missourium of Koch, from a Tracing of the Figure Illustrating Koch's Description
- The Mastodon
- Phororhacos, a Patagonian Giant of the Miocene
- Cephalaspis and Loricaria, an Ancient and a Modern Armored Fish
- Pterichthys, the Wing Fish
- Bronze Age
- The gigantic three-horned Reptile, Triceratops
- Drawing of the skull and lower jaw of the Meritherium, discovered by Dr. Andrews in the Upper Eocene of the Fayum Desert.
- The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair
- Neolithic or New Stone Age Man
- Cro Magnon
- Eoanthropos
- Pithecanthropos Erectus
- Primitive Bread Making
- Primitive Sledge
- Mammoth Hunt
- A hunter using an atlatl
- Prehistoric Whistle
- Pariasaurus - An Extinct Vegetarian Triassic Reptile
- Triceratops - A Huge Extinct Reptile
- The Skull and Brain-Case of Pithecanthropus
- A Mammoth Drawn on the Wall of the Font-de-Gaume Cavern
- A Grazing Bison, Delicately and Carefully Drawn, Engraved on a Wall of the Altamira Cave, Northern Spain
- Nautilus
- Genealogical tree of animals
- Skeleton of an Extinct Flightless Toothed Bird, Hesperornis
- The walking-fish or mud-skipper (Periophthalmus)
- The Archæopteryx
- Myotragus
- Head of the early ancestor of elephants
- Head of the ancestral elephant
- American Mastadon
- Palæomastodon
- molars of elephants
- A Reindeer Age Masterpiece
- A Menhir of the Neolithic Period