alamosaurus dinosaur autumn

age alamosaurus america animal armor art autumn bird bony carnivore china creature cretaceous dinosaur dsungaripterus eating epoch era evolution extinct extinction fall feathers genus herbivore hunter illustration image lizard long mesozoic nature necked north organism paleo paleontology period picture plant predator prehistoric primeval primitive pterodactyl pterodactylus pterosaur quadruped raptor rendering reptile sanjuanensis sauropod species tailed themes titanosaur vertebrate weii wild wildlife