- Primitive Amphibian
- Primitive armored fish
- Rhinoceros tichorhinus, the wooly-coasted Rhinoceros
- Rostro-carinate or Eagle-beak Flint Implement
- Round-headed Ofnet Man
- Saurischian dinosaurs - Allosaurus
- Saurischian dinosaurs - Brontosaurus
- Shaft-straightening
- Sketch of a coprolite—fossilized animal excrement
Coprolites are fossil dung or body waste. These objects can provide valuable information as to the food habits or anatomical structure of the animal that made them. - 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. - Solutrean Flints
- Spears and Harpoons
- Stone Age Man
- Strepyan Boucher or Hand-axe
- Swimming Reptiles - Ichthyossaur
- Swimming Reptiles - Mosasaur
- Swimming Reptiles - Plesiosaur
- Tertiary gastropods
- Tertiary mammals - Brontotherium
- Tertiary mammals - Uintatherium
- The Bow-drill
- The Cro-Magnon Man
- The Dance
- The formation of river terraces
- The Kayak
- The Piltdown Man's Bone Implement
- The Pitfall
- The Spokeshave
- 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. - Two extinct attached echinoderms
- Type of Huts suggested by Aurignacian drawings
- Type of Huts suggested by Magdalenian drawings
- Type of Huts suggested by Magdalenian drawings
- Type of Huts suggested by Magdalenian drawings 2
- Types of symmetry in a fossil coral
- Typical modern crinoid
- Typical Pennsylvanian crinoidal limestone
- Typical radiolarians
- Typical Texas Foraminifera