Читать книгу Walks and Talks in the Geological Field - Alexander Winchell - Страница 30

Table of Contents

Great Systems,or Æons.	Systems, orAges.	Groups, or Periods.	Organic Reigns.(Highest Fossils.)
CÆNOZOIC	Quaternary Tertiary	RecentChamplainGlacial PlioceneMioceneEocene	MAN. MAMMALS.
MESOZOIC	Cretaceous Jurassic Triassic	Upper CretaceousMiddle CretaceousLower Cretaceous WasatchNevada Star PeakKoipato	REPTILES (and Birds).
PALÆOZOIC	Upper Carboniferous Lower Carboniferous Devonian Silurian(Upper Silurian) Cambrian(Lower Silurian)	PermianCoal MeasuresConglomerate Measures Carboniferous LimestoneCatskill (Waverly) ChemungHamiltonCorniferousOriskany HelderbergSalinaNiagara TrentonCanadianPrimordial	AMPHIBIANS (Land Animals). FISHES (Marine Vertebrates). MARINE INVERTEBRATES.
EOZOIC	Huronian Laurentian	(Undivided) (Undivided)	PROTOZOANS.

I have included also in the foregoing table a column for Groups or Periods, because some readers will be glad of this more detailed information. This is a dry and unadorned skeleton; but geology knows how to clothe it in flesh and beauty.