1) Archeozoic 2) Early 
Seal of Rio Arriba County, New Mexico == Non-free media use rationales == ...
• (a.) Like or belonging to the earliest forms of animal life.
Archaeozoic, Archeozoic 1. Living in the earliest geological era. 2. The time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms were the earliest forms of life. 3. Formed in the earlier of two divisions of the Precambrian era. 4. Noting or pertaining to the earlier half of the Precambrian Era, from ...
Archeozoic.