[APPENDIX]

EVOLUTIONARY TABLES


[1.—GEOLOGICAL AGES AND PERIODS]

Ages in the
Organic History of the Earth.		Periods of Geology.Vertebrate Fossils.Approximate length
of Paleontological Periods.
I. Archeozoic age (primordial)
Age of invertebrates		{1. Laurentian
2. Huronian
3. Cambrian		No fossil remains of vertebrates52 million years Sedimentary strata
63,000 ft. thick
II. Paleozoic age (primary)
Age of fishes		4. Silurian
5. Devonian
6. Carboniferous
7. Permian		Fishes
Dipneusts
Amphibia
Reptiles		34 million years Sedimentary strata
41,200 ft. thick
III. Mesozoic age (secondary)
Age of reptiles		8. Triassic
9. Jurassic
10. Cretaceous		Monotremes
Marsupials
Mallotheria
Pro-placentals		11 million years Sedimentary strata
12,200 ft. thick
IV. Cenozoic age (tertiary)
Age of mammals		11. Eocene
12. Oligocene
13. Miocene
14. Pliocene		{
{
{
{		Prosimiæ
Lemurs
Cynopitheca
Baboons
Anthropoides
Man-like apes
Pithecanthropi
Ape-men		3 million years
3,600 ft. thick
V. Anthropozoic age (quaternary)
Age of man		15. Glacial
16. Post-glacial		Pre-historic man
Savage and civilised man		300,000 years Sedimentary strata
little thickness