precámbrica 477
Precambrian , ca . 1. adj. Géol. Says initial geological era spanning from makes some 5000 million years to 570 million years ago, characterized by an intense volcanic activity and the appearance of the earliest forms of life. U t. c. s. m. Or RTOGR. ESCR. with may. initial c. s. 2. adj. Géol. Belonging or relating to this age.