Definitions for "Paleozoic"
Of or pertaining to, or designating, the older division of geological time during which life is known to have existed, including the Silurian, Devonian, and Carboniferous ages, and also to the life or rocks of those ages. See Chart of Geology.
An era of geologic time, from the end of the Precambrian to the beginning of the Mesozoic (about 590-248 million years ago). Termed as the era of ancient life.
the era of geologic time between 570 and 245 million years ago
Keywords:  strata, time
The Paleozoic time or strata.