Editing Prehistory (section)

===Devonian Period===
[[File:Dunkleosteus.png|thumb|right|Dunkleosteus: apex predator of the late Devonian Sea]]
*'''420 to 359 million years ago'''
The Age of Fish. Jawed fish take over the seas and end up filling a lot of niches. In particular, there are the Placoderms. A group of armored fish which filled a lot of niches in the sea and which grew to massive sizes. But there were also sharks and their relatives, some families that died out and bony fish. One strain of lobed finned bony fish makes its home in rivers and swamps, develop lungs and then legs and begin to crawl out of the sea into new steamy forests away from predators and with access to bugs to eat. These were the first ''Stegocephalians'', or "Fishapods". The first land vertebrates.

Ends with the Late Devonian Extinction Event.