3 min read The Cambrian period, part of the Paleozoic era ... marine habitats ideal for spawning new life-forms. Nevertheless, the scale of the Cambrian Explosion is likely exaggerated due ...

For this reading guide, we're just looking at the sections of the chapters about rocks. The topic guide on Paleozoic Life picks up the sections of the chapters on critters. The topic guide organizes ...

The new study also investigated how early life forms of invertebrates, influenced geochemical cycles during the early ...