NOTES TO “SIMILAR CASES”
Reading edition
Tertiary Rocks. It is in the rocks of this period that the fossils of the various extinct primitive quadrupeds are found.
Eohippus. An Eocene perissodactyl with four anterior and three posterior digits apparently allied to the Hyracotherium ancestors of horse-like animals.
Dinoceras. A gigantic mammal of elephantine form, having three pairs of protuberances on the upper surface of his head.
Coryphodon. A fossil mammal somewhat resembling the hippopotamus.
Loxolophodon. An extinct mammal with obliquely crested molars.
Mastodon. An extinct elephant larger but similar in form to existing species.
Neolithic. Belonging to the later stone age, when first indication of polished stone weapons and implements of agriculture began to appear.
Mammoths. A very large extinct Pleistocene elephant with coarse outer hair and close woolly under hair and enormous tusks usually much curved.