Archeozoic

Even in the Archeozoic the rocks testify to a climate seemingly not greatly different from that of the average of geologic time.

As regards the life of the Archean, or, as some call it, the “Archeozoic” period, we know nothing.

After the Formative Era came the Archeozoic Era, when life began in the form of amœbas or some simple form of protoplasm.

Archeozoic Archean   No fossils found, but life inferred from the existence of iron ores and limestones, which are generally formed in the presence of organisms.

Although the Archeozoic has yielded no generally admitted fossils, yet what seem to be massive algæ and sponges have been found in Canada.