The Earliest fish appeared through the Cambrian as compact filter feeders; they ongoing to evolve throughout the Paleozoic, diversifying into lots of forms. The earliest fish with focused respiratory gills and paired fins, the ostracoderms, experienced significant bony plates that served as protecting exoskeletons from invertebrate predators. Live reactions really https://maps.app.goo.gl/kTisAZCbSjAw6nkX8