an archaeological find. ancient prehistoric fossils. the first living beings on the planet earth. first ancient

fossil marine snail shell mineral ocean old paleontology paleozoic cephalopods prehistoric research researcher sediment skeleton stone terrain prehistory trilobite invertebrate scientist ancient animal antique archeology arthropod documentation paleontologist geology exoskeleton geological extinct excavation fossilization fossilized science evolution examining find shellfish coral polyps stony rocky mollusca mollusc mollusk clam molluscum