Dipterus is an extinct freshwater lungfish.

ANAL FINS • ANIMAL SCALE • ANIMAL THEMES • ANIMAL • AQUATIC • ARTWORK • CARBONIFEROUS PERIOD • CARBONIFEROUS • CAUDAL FINS • COLOR IMAGE • COLOUR IMAGE • COPY SPACE • CREATURE • CUTOUT • DEVONIAN • DIGITALLY GENERATED IMAGE • DINOSAUR • DINOSAURS • DIPTERIDAE • DIPTERUS MACROLEPIDOTUS • DIPTERUS • DORSAL FINS • EVOLUTION • EXTINCT • FIN • FISH SCALES • FISH • FRESH WATER • FRESHWATER • FULL LENGTH • FULL-LENGTH • HORIZONTAL • ILLUSTRATION • ILLUSTRATIONS • ILUSTRATION • LATERAL VIEW • LOBE-FINNED FISH • LUNGFISH • MORPHOLOGY • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • OMNIVORE • ONE ANIMAL • OSTEICHTHY • OSTEICHTHYES • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOART • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOIC ERA • PALEOZOOLOGY • PAST • PREHISTORIC ERA • PRIMITIVE • SALAMANDERFISH • SARCOPTERYGII • SCIENCE • SCIENCE: EVOLUTION • SEA LIFE • SIDE VIEW • SPECIES • SWIMMING • UGLINESS • WHITE BACKGROUND • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY