close up detailed image of ammonite fossil texture

abstract ammonite ammonites ammonitida ammonoidea amonite ancient animals antiquity archeological archeology artifacts biology cephalopod cephalopods circular close closeup coast coil creature cretaceous curl decoration detail detailed dorset england evolution extinct fossil fossilization fossilized fossils from geologic geological geology geometric history image jurassic marine mineral mollusk natural nature nautilus ocean old paleontologist paleontology pattern period petrified prehistoric prehistory remains research rock scientist sea seashell shell skeleton snail spiral stone swirl texture textured