2. Paleozoic Era Ordovician Period Copy everything on this slide 488-444 mya Diversification of marine organisms of Paleozoic fauna End-Ordovician extinction Deep-water faunas, especially graptolites are common, colonial marine organisms Appearance of conodonts, marine fish-like predators Development of coral reefs Plants evolved onto land First major Paleozoic ice age.

3. Colonial Organisms that looked like graphite hieroglyphs of the Egyptians Graptolites

4. Nautilus

5. Conodonts- marine predators Lamprey Fish Hag fish

6. Blue-green Algae