ammonite is a fossil of a squid, photographed in close-up in studio

ammonite fossil spiral snail prehistoric amonite fossilized evolution stone geology ammonidea fossils ammonites extinct textured geological cephalopod coil rock abstract texture nature macro design marine pattern seashell detail background closeup ancient brown nautilus surface natural petrified mineral fractal mollusc shell paleontology discovery animals circular close circles squid photographed close-up studio