Herrerasaurus ischigualastensis, a prehistoric era dinosaur.

AGGRESSION • ANGRY • ANIMAL MOUTH • ANIMAL TEETH • ANIMAL THEMES • ANIMAL • ARTWORK • BIPED • CARNIAN • CARNIVORE • CLAW • CLAWS • COLOR IMAGE • COLOUR IMAGE • CREATURE • CUTOUT • DINOSAUR • DINOSAURS • EVOLUTION • EXTINCT • FIERCE • GROWL • HERRERASAURUS ISCHIGUALASTENSIS • HERRERASAURUS • HISSING • HORIZONTAL • ILLUSTRATION TECHNIQUE • ILLUSTRATION • ILLUSTRATIONS • JAW • LARGE • LATERAL VIEW • MESOZOIC ERA • MOUTH OPEN • NATURAL HISTORY • NATURAL SCIENCES • NATURE STUDY • NO PEOPLE • ONE ANIMAL • OPEN MOUTH • OPEN-MOUTHED • PAINTING • PALAEONTOLOGY • PALAEOZOOLOGY • PALEOBIOLOGY • PALEONTOLOGY • PALEOZOOLOGY • PAST • POWERFUL • PREDATOR • PREHISTORIC ERA • REPTIL • REPTILE • REPTILES • ROARING • SCIENCE: EVOLUTION • SIDE VIEW • SNARLING • SPECIES • TALON • THEROPOD • TOUGHNESS • TRIASSIC • VERTEBRATE • WHITE BACKGROUND • WILDLIFE • WITHOUT PEOPLE • ZOOLOGY