Apatosaurus dinosaur walking in the mountains by day.

ANIMAL THEMES • ANIMAL • APATOSAURUS • ARTWORK • BEHEMOTH • BRONTOSAURUS • COLOR IMAGE • COLOUR IMAGE • CREATURE • CRETACEOUS • DAY • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • EVOLUTION • EXTINCT • FULL LENGTH • FULL-LENGTH • GIGANTIC • HERBIVORE • HOOFED MAMMALS • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • JURASSIC • KIMMERIDGIAN • LARGE • LATERAL VIEW • MESOZOIC ERA • MOUNTAIN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • ONE ANIMAL • OUTDOOR • OUTDOORS • OUTSIDE • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEONTOLOGY • PALEOZOOLOGY • PAST, THE • PREHISTORIC ERA • PRIMEVAL • PRIMITIVE • PRIMORDIAL • QUADRUPED • REPTIL • REPTILE • REPTILES • SAURISCHIA • SAUROPOD • SAUROPODOMORPH • SCIENCE: EVOLUTION • SIDE VIEW • SPECIES • TITHONIAN • TRIASSIC • VERTEBRATE • WALKING • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY