The Earliest fish appeared throughout the Cambrian as modest filter feeders; they ongoing to evolve in the Paleozoic, diversifying into many types. The earliest fish with committed respiratory gills and paired fins, the ostracoderms, experienced hefty bony plates that served as protective exoskeletons in opposition to invertebrate predators. Опорно-двигательная система https://maps.app.goo.gl/kTisAZCbSjAw6nkX8