- Young Hoactzins
- Where a Dinosaur Sat Down
In the light of our present knowledge we are able to read many things in these tracks that were formerly more or less obscure, and to see in them a complete verification of Dr. Deane's suspicion that they were not made by birds. We see clearly that the long tracks called Anomœpus, with their accompanying short fore feet, mark where some Dinosaur squatted down to rest or progressed slowly on all-fours, as does the kangaroo when feeding quietly;[3] and we interpret the curious heart-shaped depression sometimes seen back of the feet, not as the mark of a stubby tail, but as made by the ends of the slender pubes, bones that help form the hip-joints. Then, too, the mark of the inner, or short first, toe, is often very evident, although it was a long time before the bones of this toe were actually found, and many of the Dinosaurs now known to have four toes were supposed to have but three. - Typical Texas Foraminifera
- Typical radiolarians
- Typical Pennsylvanian crinoidal limestone
- Typical modern crinoid
- Types of symmetry in a fossil coral
- Type of Huts suggested by Magdalenian drawings 2
- Type of Huts suggested by Magdalenian drawings
- Type of Huts suggested by Magdalenian drawings
- Type of Huts suggested by Aurignacian drawings
- Two extinct attached echinoderms
- Triceratops - A Huge Extinct Reptile
(From remains found in Cretaceous strata of Wyoming, U.S.A.) This Dinosaur, about the size of a large rhinoceros, had a huge three-horned skull with a remarkable bony collar over the neck. But, as in many other cases, its brain was so small that it could have passed down the spinal canal in which the spinal cord lies. Perhaps this partly accounts for the extinction of giant reptiles. - Tooth of Mastodon and of Mammoth
- Time-chart 6000 B.C. to A.D.
Time-chart 6000 B.C. to A.D. - Thespesius, a Common Herbivorous Dinosaur of the Cretaceous
- The walking-fish or mud-skipper (Periophthalmus)
It skips about by means of its strong pectoral fins on the mud-flats; it jumps from stone to stone hunting small shore-animals; it climbs up the roots of the mangrove-trees. The close-set eyes protrude greatly and are very mobile. The tail seems to help in respiration. - The Track of a Three-toed Dinosaur
The Track of a Three-toed Dinosaur - The Toxodon
The skeleton of a gigantic extinct rat-like animal - the Toxodon - from the Argentine, South America. Length from the snout to the tail, nine feet. - The Three Giants, Phororhacos, Moa, Ostrich
- The Sub-Man Pithecanthropus
Possible Appearance of the Sub-man Pithecanthropus. The face, jaws, and teeth are mere guess work. The creature may have been much less human looking than this. - The Spokeshave
- The Skull and Brain-Case of Pithecanthropus
The java ape-man, as restored. By J. H. Mcgregor from the scanty remains The restoration shows the low, retreating forehead and the prominent eyebrow ridges. - The Saurian Age
- The Pitfall
- The Piltdown Man's Bone Implement
- The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair
The oldest fossil fish known—discovered in the Upper Silurian strata of Scotland, and named Birkenia by Professor Traquair. - 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 Largest Known Dinosaur
The Largest Known Dinosaur. Sketch reconstruction of Brachiosaurus, from specimens in the Field Museum in Chicago, and the Natural History Museum in Berlin. - The Kayak
- The Horned Ceratosaurus, a Carnivorous Dinosaur
- The gigantic three-horned Reptile, Triceratops
The gigantic three-horned Reptile, Triceratops, as large as an Elephant, found in Jurassic strata in North America. A model of the skeleton may be seen in the Natural History Museum in London. - The formation of river terraces
- The Development of the Horse
- The Dance
- The Cro-Magnon Man
- The Bow-drill
- The Archæopteryx
(After William Leche of Stockholm.) A good restoration of the oldest known bird, Archæopteryx (Jurassic Era). It was about the size of a crow; it had teeth on both jaws; it had claws on the thumb and two fingers; and it had a long lizard-like tail. But it had feathers, proving itself a true bird. - Tertiary mammals - Uintatherium
- Tertiary mammals - Brontotherium
- Tertiary gastropods
- Swimming Reptiles - Plesiosaur
- Swimming Reptiles - Mosasaur
- Swimming Reptiles - Ichthyossaur
- Strepyan Boucher or Hand-axe
- Stone Age Man
- Spears and Harpoons
- Some Reptiles of the Late Paleozoic Age
- Some Oligocene Mammals
Some Oligocene Mammals - Some Mesozoic Reptiles
Some Mesozoic Reptiles - Some Late Mesozoic Reptiles
- Solutrean Flints
- Skulls of Iguanodont and Trachodont Dinosaurs
Skulls of Iguanodont and Trachodont Dinosaurs - Skulls of Horned 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
Skulls of Dinosaurs, illustrating the principal types - Skull of Phororhacos Compared with that of the Race-horse Lexington
- Skull of Ceratosaurus
- Sketch of a gastrolith—the gizzard stone of an ancient reptile
These highly polished well-rounded stones (gastrolith) are believed to have been used in the stomachs of reptiles for grinding the food into smaller pieces. Large numbers of these “stomach stones” have been found with the remains of certain types of dinosaurs.