ammonit mollyusk silhouette fossil prehistoric animal

age ammonit ammonitida ammonoidea ancient animal archeology biology cephalopod cretaceous evolution extinct fossil fossilized geological geology golovonogiye graphic heteromorphy historic historical history icon illustration isolated jurassic marine mineral mollusc mollusk ocean old palaeontology paleontological paleontology period petrifaction prehistoric prehistory rock scaphitinae science sea shell spiral underwater vector zoology