Texts:
Explain what may have caused animal diversity to explode during the Cambrian. Describe for each taxon (porifera, cnidaria, annelids, mollusks, arthropods, echinoderms, chordates, vertebrates, fishes, amphibians, reptiles, birds, mammals): basic anatomy/structure, main organ systems, how it obtains food, how it moves, how it reproduces, and how it interacts with the environment. Describe the main adaptations of each taxon for its particular environment & lifestyle (e.g., marine environment, freshwater, terrestrial, parasitic, flying, active predator, sessile, etc.).