alamosaurus dinosaur landscape

africa alamosaurus america anhanguera animal armor bird bony carnivore creature cretaceous dinosaur epoch era evolution extinct extinction flight flying genus herbivore herbivorous illustration image landscape lizard longnecked longtailed morocco mountain nature north organism paleontology period picture planteating prehistoric primeval primitive pterodactyl pterodactylus pterosaur quadruped reptile river sanjuanensis sauropod species teeth themes titanosaur tree vertebrate wild wildlife wing