Fossils wanyama aligundua ni pamoja na bivalves, konokono, ray-fined samaki, vyura, salamanders, turtles, sphenodonts, mbweha, terrestrial na majini crocodylomorphs, aina kadhaa ya pterosaur, aina nyingi dinosaur, na mapema mamalia kama docodonts, multituberculates, symmetrodont, na triconodonts. Dinosaurs kutoka Morrison ni pamoja na theroprodot Ceratosaurus, Ornitosaurus, mosses, horsetails, ferns, cycads, ginkgoes, na familia kadhaa ya conifers. Fossils wengi wa wanyama aligunduliwa walikuwa anatomically tofauti kutoka kwa wale wa zamani zaidi, lakini walikuwa na faida sawa na wale wa zamani katika maeneo ya chini ya bahari kama vile: Stepanosaurus, Acerosaurus, Acerosaurus, Ceratosaurus, Brontosaurus, Diplosaurus, Brontosaurus, na Ceratosaurus.
alosaurus