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

fossil marine middle cambrian mineral ocean old paleontology paleozoic prehistoric research researcher rock sea animals sediment skeleton stone terrain prehistory trilobite invertebrate scientist ancient animal antique archaeologist archeology arthropod dinosaur documentation paleontologist geology ground exoskeleton geological extinct excavation fossilization fossilized science evolution examining zoologist find remains shellfish coral polyps stony rocky cephalopods