Abstract: The properozoic Era (2500 to 545 million years ago) is important times of evolution of the life and the earth. It is also eve of expolsive evolution of the life on the cambrian period. The relationship between the proterozoic Era and explosive evolution of the life on the Cambrian period was preliminary explored by an Ecological and Evolutionary approach in this paper.

Key words: Proterozoic ear, Cambrian period, explosive evolution