Paleontology and Geology of the Upper Jurassic Morrison Formation

abundant Allosaurus Apatosaurus beds Bilbey Brushy Basin Member Bulletin calcareous Camarasaurus carbonate Carpenter caudal vertebrae Ceratosaurus channel Chure clay change clay mineralogy clay minerals claystone Cretaceous crevasse splay crocodilian debris flow deposits Dinosaur Quarry diplodocids Diplodocus distal Dodson dorsal environment femur Fiorillo flood plain Formation Upper Jurassic fossils Foster Fruita Goniopholis greenish gray Hasiotis illite indicate interpreted Jurassic Morrison Formation Kirkland lacustrine Late Jurassic layer length levee locality Lockley lower Lucas Madsen Main Callison Quarry Mexico Museum Modern Geology Morrison Formation Morrison Formation Upper mudstone Museum of Natural Natural History neural spines NMMNH nodules Paleontology paleosols pedogenic pond Portugal preserved pterosaur Salt Wash Member sauropod Sedimentary sedimentology sediments Seismosaurus hallorum siltstone skeleton smectite species specimens stratigraphic taphonomy theropod Tidwell tion Torvosaurus tracks trackways Turner and Peterson units Upper Jurassic Upper Jurassic Morrison Utah vertebrate Western Colorado Western Interior Wyoming