seamless pattern of hand drawn seashell, ammonites, trilobite and other fossil animals

age ammonites ancient animal aquarelle art background belemnite biology bivalves bone collection design drawing drawn era evolution extinct fish fossil hand history illustration imprint jurassic marine mineral nature neolithic old paleolithic paleontology pattern petrifaction petrified prehistoric science sea seamless seashell set skeleton starfish stone style texture trilobite watercolor white zoolith