Xayawaan badan oo la helay waxaa ka mid ah bivalves, snails, kalluunka ray-finned, qaniinyada, salamanders, turtles, sphenodonts, lizards, crocodylomorphs dhulka iyo biyaha, dhowr nooc oo pterosaur ah, noocyo badan oo dinosaur ah, iyo naasley hore sida docodonts, multituberculates, symmetodonts, iyo triconts. Dinosaurs ka Morrison waxaa ka mid ah theroprodot Ceratosaurus, Ornitosaurus, mosses, Tanyatosaurus, and horsetails, ferns, cycads, ginkgoes, and several families of conifers. Waxaa jira saddex nooc oo kale oo ka badan oo laga helay meelo kala duwan oo ka mid ah geedaha biyaha, kuwaas oo si isku mid ah uga faa'iideystay oo ay u muuqdaan kuwo ka badan oo ka badan oo ka badan kuwa kale oo ka soo jeeda geedaha biyaha. Waxaa la ogaaday in labada noocba ay si isku mid ah uga faa'iideysteen geedaha biyaha biyaha biyaha ee bi
xayawaanada loo yaqaan allosaurs