The Earliest fish appeared in the Cambrian as compact filter feeders; they ongoing to evolve through the Paleozoic, diversifying into many forms. The earliest fish with committed respiratory gills and paired fins, the ostracoderms, experienced large bony plates that served as protective exoskeletons from invertebrate predators. On the net shopping https://maps.app.goo.gl/kTisAZCbSjAw6nkX8