close-up of fossil ammonites, of the ammonoidea species

aged ammonite ammonites ammonitida ammonoid ammonoidea amonite ancient animal animals aquatic archeology background biology black brown cephalopod cephalopoda circular close closeup coil creature crustacean detail evolution fosil fossil fossiles fossilized fossils geological geology isolated jurassic marine paleontology prehistoric section serpentstone shell snakestone white