What was the main event during the devonian period?

What was the main event and can you name 2 animals and plants. It is for a science projectWhat was the main event during the devonian period?
age of the fish. Sea life was abundant. corals, sponges, bryozoans, brachiopods, trilobites, snails, clams, cepholopods, crinoids, and shale.

armored fish-large ugly poorswimming fish found in cleveland abundantly

cartilage fish-better swimmers poorly preserved. main types.

ostracoderm- bottom feeders mouth on belly- first fish. possibly evolved from brachiopods (bi valves) Nicknamed jawless fish good index fossil. possible missing link. hard to find.