Paleozoic, ca.
(From I paleo-, zoo - and ?)(ico).
1. adj. Géol. Said geological era covers since the end of the Precambrian, done some 570 million years ago until around 230 million years. It comprises successively the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian periods. U t. c. s. m.
ORTOGR. ESCR. with may. initial c. s.
