The Earliest fish appeared over the Cambrian as compact filter feeders; they ongoing to evolve through the Paleozoic, diversifying into numerous varieties. The earliest fish with committed respiratory gills and paired fins, the ostracoderms, experienced weighty bony plates that served as protecting exoskeletons in opposition to invertebrate predators. Join the https://maps.app.goo.gl/kTisAZCbSjAw6nkX8