6.—|Creation of land animals. ——|Eocene.
|Creation of man. |Miocene.
|Pleiocene.
|Post Tertiary.
CONCURRENT EVENTS.
Laurentian: Upper Laurentian unconformably placed on Lower
Laurentian, which contains Eozoon Canadense.
Cambrian: Traces of volcanic action. Ripple marks indicating land.
Silurian: Earliest fish.
Devonian: Earliest land plants.
Carboniferous: The coal measures. Peculiarly abundant vegetation.
Earliest known reptile.
Permian: Foot-prints of birds and reptiles—with a few remains of the latter.
Jurassic: The first bird, and the first mammal. The age of reptiles.
Cretaceous: Reptiles passing away, mammalia abundant and of large size.