Original: Cephalopod size , for maximum shell diameters The Chambered Nautilus , a poem of Oliver Wendell Holmes Coelacanth , another '' living fossil '' History of animals by Conrad Gesner , first book with fossil illustrations .
Simplified: Cephalopod size , for maximum shell diameters The Chambered Nautilus , a poem of Oliver Wendell Holmes Coelacanth , another '' living fossil '' References Sweeney , M.J. 2002 .