Mesosaurus, an aquatic reptile from the Early Permian period.

ANIMAL BODY • ANIMAL TAIL • ANIMAL TEETH • ANIMAL THEMES • ANIMAL • AQUATIC • ARTWORK • CARNIVORE • COLOR IMAGE • COLOUR IMAGE • CONCEPT • COPY SPACE • CREATURE • CUTOUT • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • EVOLUTION • EXTINCT • FLIPPER • FORT • FULL LENGTH • HORIZONTAL • ILLUSTRATION • JAW • LARGE • LATERAL VIEW • LONG • MESOSAUR • MESOSAURUS • MORPHOLOGY • MOUTH OPEN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • ONE ANIMAL • OPEN MOUTH • OPEN-MOUTHED • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOIC ERA • PALEOZOOLOGY • PARAREPTILE • PAST • PERMIAN • POWERFUL • PREHISTORIC ERA • PRIMITIVE • REPTIL • REPTILE • REPTILES • RUGGED • SAUROPSID • SCIENCE: EVOLUTION • SEA LIFE • SHARP • SIDE VIEW • SLENDER • SPECIES • STRONG • VERTEBRATE • WHITE BACKGROUND • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY