The Triassic period-—General characters and subdivisions of the Trias of the Continent of Europe and Britain—Trias of North America—Life of the period — Plants — Echinoderms — Crustaceans — Polyzoa — Brachiopods — Bivalves — Univalves — Cephalopods — Intermixture of Palæozoic with Mesozoic types of Molluscs — Fishes — Amphibians — Reptiles — Supposed footprints of Birds — Mammals — Literature.

[ CHAPTER XVI.]

The Jurassic period—General sequence and subdivisions of the Jurassic deposits in Britain—Jurassic rocks of North America—Life of the period — Plants — Corals — Echinoderms — Crustaceans — Insects — Brachiopods — Bivalves — Univalves — Pteropods — Tetrabranchiate Cephalopods — Dibranchiate Cephalopods — Fishes — Reptiles — Birds — Mammals — Literature.

[ CHAPTER XVII.]

The Cretaceous period—General succession and subdivisions of the Cretaceous rocks in Britain—Cretaceous rocks of North America—Life of the period — Plants — Protozoa — Corals — Echinoderms — Crustaceans — Polyzoa — Brachiopods — Bivalves — Univalves — Tetrabranchiate and Dibranchiate Cephalopods — Fishes — Reptiles — Birds — Literature.

[ CHAPTER XVIII.]

The Eocene period—Relations between the Kainozoic and Mesozoic rocks in Europe and in North America—Classification of the Tertiary deposits—The sequence and subdivisions of the Eocene rocks of Britain and France—Eocene strata of the United States—Life of the period — Plants — Foraminifera — Corals — Echinoderms — Mollusca — Fishes — Reptiles — Birds — Mammals.

[ CHAPTER XIX.]

The Miocene period—Miocene strata of Britain—Of France—Of Belgium—Of Austria—Of Switzerland—Of Germany—Of Greece—Of India—Of North America—Of the Arctic regions—Life of the period—Vegetation of the Miocene period — Foraminifera — Corals — Echinoderms — Articulates — Mollusca — Fishes — Amphibians — Reptiles — Mammals.

[ CHAPTER XX.]