The period following on after Archean time is called, by geologists, Paleozoic time.
"The Prehistoric World" by E. A. Allen
Then began a forty-mile ride through a dense Canadian spruce forest over the drift and boulders of the paleozoic age.
"Locusts and Wild Honey" by John Burroughs
There is a laboratory of invertebrate paleontology of Paleozoic age, with a corps of paleontologists.
"Scientific American Supplement, No. 484, April 11, 1885" by Various
You know, back in the Paleozoic Age!
"Ruth Fielding in the Great Northwest" by Alice B. Emerson
Eastward tilting and deposition of Martinsburg shale; oscillations during later Paleozoic time.
"History and Comprehensive Description of Loudoun County, Virginia" by James W. Head
Paleodictyoptera: an ordinal name suggested by Scudder for Paleozoic insects which cannot be assigned to existing orders.
"Explanation of Terms Used in Entomology" by John. B. Smith
Zinc ores of this same general character are also found in Paleozoic rocks (Knox dolomite) in Virginia and Tennessee.
"The Economic Aspect of Geology" by C. K. Leith
The Paleozoic (ancient life) or Primary period is made up of a number of subdivisions.
"Nature's Miracles, Volume 1" by Elisha Gray
The Paleozoic sediments, ranging in age from Cambrian to Permian, occupy the Great Valley, the Valley Ridges and the plateaus still farther west.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3" by Various
Sometimes, also, this sandstone rests on the edges of the disturbed paleozoic rocks (as seen in the section).
"A Manual of Elementary Geology" by Charles Lyell
Stanley, “Paleozoic mass extinctions: Shared patterns suggest global cooling as a common cause,” Am. J.
Simple models of evolution and extinction
Paleozoic and Mesozoic sediments were uncomformably deposited on this uncomformity surface.
Reference Design Project Book: NUSEL-Homestake