Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ebe a na-agafe agafe: Ebe a na-achọta ihe ndị e gwupụtara n'ala na Morrison Formation. E kpughere ahịhịa ndụ nke oge ahụ site na nsị nke ahịhịa ndụ, fungi, mosses, horsetails, ferns, cycads, ginkgoes, na ọtụtụ ezinụlọ nke conifers. Ụmụ anụmanụ ndị a chọpụtara gụnyere bivalves, snails, ray-finned fishes, frogs, salamanders, turtles, sphenodonts, lizards, terrestrial and aquatic crocodylomorphs, ọtụtụ ụdị pterosaur, ọtụtụ ụdị dinosaur, na ụmụ anụmanụ ndị mbụ dị ka docodonts, multituberculates, symmetrodonts, na triconodonts. Dinosaurs ndị a maara site na Morrison gụnyere theropods Ceratosaurus, Ornitholestes, Tanycolagreus, na Torvosaurus, sauropods Haplocanthosaurus, Camarasaurus, Cathetosaurus, Brachiosaurus, Suuwassea, Apatosaurus, Brontosaurus, Barosaurus, Diplodocus, Supersaurus, na Amphicoelias, na ornithischians Camptosaurus, Dryosaurus, na Stegosaurus. A na-ahụkarị Allosaurus n'otu ebe ndị Apatosaurus, Camarasaurus, Diplodocus, na Stegosaurus nọ. A na-akọwa usoro Jurassic nke Portugal ebe Allosaurus nọ dị ka nke yiri Morrison ma nwee mmetụta mmiri siri ike karị. Ọtụtụ n'ime dinosaurs nke Morrison Formation bụ otu ụdị ahụ dị ka ndị ahụ a hụrụ na nkume Portuguese (ọkachasị Allosaurus, Ceratosaurus, Torvosaurus, na Stegosaurus), ma ọ bụ nwee onye ibe ya (Brachiosaurus na Lusotitan, Camptosaurus na Draconyx).Allosaurus biri na ibe ya nnukwu theropods Ceratosaurus na Torvosaurus na United States na Portugal. O yiri ka ha atọ hà nwere ebe dịgasị iche iche ha bi, dabere n'otú ha dị n'ahụ́ nakwa n'ebe ihe ndị e gwupụtara n'ala dị. Ceratosaurs na torvosaurs nwere ike na-ahọrọ na-arụsi ọrụ ike gburugburu waterways, na nwere ala, thinner ozu nke ga-enye ha uru na oké ọhịa na underbrush terrains, ebe allosaurs ndị ọzọ kọmpat, na ogologo ụkwụ, ngwa ngwa ma na-erughị maneuverable, na o yiri ka họọrọ akọrọ floodplains. Ceratosaurus, nke a maara nke ọma karịa Torvosaurus, dị iche n'ụzọ pụtara ìhè site n'aka Allosaurus n'ihe gbasara ọrụ...  Ajụjụ: Olee dinosaur nwere ụkwụ kachasị ogologo
ndị allosaurs