Introductory material
Reading edition
TABLE OF GEOLOGICAL HISTORY.
Non-Geological readers will find in the following table a condensed explanation of the more important technical terms used in the following pages. The order is from older to newer.
GREATER PERIODS. SYSTEMS OF FORMATIONS. CHARACTERISTIC FOSSILS.
Archæan or Eozoic Pre-Laurentian Laurentian Protozoa Protophyta
Palæozoic Huronian Crustaceans Algæ
Cambrian Molluscs Cryptogamous
Cambro-Silurian[A] Worms and
Silurian[B] Corals, etc, Gymnospermous
Devonian Fishes Plants.
Carboniferous Amphibians
Permian
Mesozoic Triassic Reptiles Pines and
Jurassic Birds Cycads
Cretaceous Earliest Mammals. Trees of modern types.
Kainozoic or Tertiary Eocene Higher Mammals
Miocene of extinct forms
Pliocene Recent Mammals Modern Plants,
Pleistocene and
Modern Man.