[F] Morrison Formation - US
Morrison Formation - Colorado - Montana - New Mexico - Oklahoma - South Dakota - Utah - Wyoming - US
The Morrison Formation is occupying more than 1.5 million km2 of the western United States. Radiometric dating shows that the Morrison Formation is enterely Late Jurassic (Kowallis et al., 1997). The northern exposures of the the Morrison Formation contain coal, suggesting a much wetter and swampier environment than the southwestern outcrops witch contains many eolian sandstones indicating a hot, arid sand dessert (Carpenter et al., 1997).
Adjacent to these sandstones are thick deposits of mudstone, formed by the deposition of mud from floods. In the sand- and mudstones most of the dinosaurs of the Morisson Formation are found. Dinosaur fossils are not the only fossils that are known from the Morrison Formation, fishes, frogs, salamanders, lizards, crocodiles, pterosaurs, dinosaur eggs, and shrew- to ratsized mammals are known from mostly fragmentary remains.
Allosaurus fragilis - Colorado, Montana, New Mexico, Oklahoma, South Dakota, Utah, Wyoming - Carnosauria Allosauridae - Jurassic Late Kimmeridgian Tithonian
Amphicoelias altus - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Amphicoelias fragillimus - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Amphicoelias latus - Colorado - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Antrodemus valens - Colorado - Carnosauria Allosauridae - Jurassic Late Tithonian
Apatodon mirus - [Dinosauria indet.] Nomina Dubia - Kimmeridgian Tithonian
Apatosaurus ajax - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Apatosaurus excelsus - Colorado, Oklahoma, Wyoming - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Apatosaurus grandis - Colorado, Montana, Wyoming - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Apatosaurus louisae - Utah - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Apatosaurus minimus? - Wyoming - Cetiosauridae Incertae Sedis - Jurassic Late Kimmeridgian Tithonian
Apatosaurus montanus - Colorado - Diplodocidae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Apatosaurus yahnahpin - Wyoming - Apatosaurinae Nomina Dubia - Jurassic Late
Atlantosaurus immanis - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Atlantosaurus laticollis - Colorado - Diplodocidae Diplodocinae - Jurassic Late
Atlantosaurus minimus - Wyoming - Cetiosauridae Incertae Sedis - Jurassic Late Kimmeridgian Tithonian
Atlantosaurus montanus - Colorado - Diplodocidae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Barosaurus affinis - South Dakota ?, Utah ? - Diplodocidae Diplodocinae - Jurassic Late Tithonian
Barosaurus lentus - New Mexico, South Dakota, Utah - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian (?Cretaceous Early ?Aptian Albian Cenomanian)
Beelemodon - Wyoming - Nomen Nudem - Jurassic Late Kimmeridgian Tithonian
Brachiosaurus altithorax - Colorado, Utah - Sauropoda Brachiosauridae - Jurassic Late Kimmeridgian Tithonian
Brachyrophus altarkansanus - Colorado - Iguanodontia Camptosauridae - Jurassic Late Kimmeridgian Tithonian
\\\\\\\"Brontoraptor\\\\\\\" - Wyoming - Megalosauridae Nomen Nudem - Jurassic Late Kimmeridgian Tithonian
Brontosaurus ajax - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Brontosaurus amplus - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Brontosaurus excelsus - Colorado, Oklahoma, Wyoming - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Brontosaurus montanus - Colorado - Diplodocidae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Camarasaurus annae - Utah - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Camarasaurus grandis - Colorado, Montana, Utah, Wyoming - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Camarasaurus lentus - Utah, Wyoming - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Camarasaurus lewisi - Colorado - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Camarasaurus supremus - Colorado, New Mexico, Wyoming - Camarasauridae Camarasaurinae - Jurassic Late Kimmeridgian Tithonian
Camptonotus amplus - Wyoming - Carnosauria Allosauridae - Jurassic Late Kimmeridgian Tithonian
Camptosaurus amplus - Wyoming - Carnosauria Allosauridae - Jurassic Late Kimmeridgian Tithonian
Camptosaurus aphanoecetes - Utah - Iguanodontia Camptosauridae - Jurassic Late
Camptosaurus browni - Utah - Iguanodontia Camptosauridae - Jurassic Late Kimmeridgian Tithonian
Camptosaurus dispar - Colorado, Oklahoma, Utah, Wyoming - Iguanodontia Camptosauridae - Jurassic Late Kimmeridgian Tithonian
Camptosaurus nanus - Wyoming - Iguanodontia Camptosauridae - Jurassic Late Kimmeridgian Tithonian
Cathetosaurus lewisi - Colorado - Camarasauridae Camarasaurinae - Jurassic Late
Ceratosaurus dentisulcatus - Utah - Theropoda Ceratosauria - Jurassic Late Kimmeridgian Tithonian
Ceratosaurus magnicornis - ? - Theropoda Ceratosauria - Jurassic Late Kimmeridgian Tithonian
Ceratosaurus nasicornis - Colorado - Theropoda Ceratosauria - Jurassic Late Kimmeridgian Tithonian
Ceratosaurus willisobrienorum - Colorado, Utah - Ceratosauria Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Coelurus agilis - Wyoming - Tetanurae Coelurosauria - Jurassic Late Kimmeridgian Tithonian
Coelurus fragils - Utah, Wyoming - Tetanurae Coelurosauria - Jurassic Late Kimmeridgian Tithonian
Diplodocus carnegii - Utah, Wyoming - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus halli - New Mexico, Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus hallorum - New Mexico, Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus hayi - Utah - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus lacustris - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus longus - Colorado, Utah - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Drinker nisti - Wyoming - Ornithopoda Hypsilophodontidae - Jurassic Late Kimmeridgian Tithonian
Dryosaurus altus - Colorado, Utah, Wyoming - Ornithopoda Dryosauridae - Jurassic Late Kimmeridgian Tithonian
Dystrophaeus viaemalae - Utah - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Dystylosaurus edwini - Colorado - Sauropoda Brachiosauridae - Jurassic Late Kimmeridgian Tithonian
Edmarka rex - Wyoming - Tetanurae Torvosauridae - Jurassic Late Kimmeridgian
Elaphrosaurus sp (1) - ? - Theropoda Incertae Sedis Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Eobrontosaurus - Wyoming - Diplodocidae Apatosaurinae - Jurassic Late
Fruitadens haagarorum - Ornithopoda Heterodontosauridae - Jurassic Late Tithonian
Gargoyleosaurus parkpini - Wyoming - Ankylosauria Ankylosauridae - Jurassic Late
Haplocanthosaurus delfsi - Colorado - Cetiosauridae Cetiosaurinae - Jurassic Late Kimmeridgian Tithonian
Haplocanthosaurus priscus - Colorado, Wyoming - Cetiosauridae Cetiosaurinae - Jurassic Late Kimmeridgian Tithonian
Haplocanthosaurus utterbacki - Cetiosauridae Cetiosaurinae - Jurassic Late Kimmeridgian Tithonian
Hesperosaurus mjosi - Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Hypsirhophus discurus (1) - Colorado - Carnosauria Allosauridae - Jurassic Late Kimmeridgian Tithonian
Hypsirhophus discurus (2) - Colorado - Stegosauridae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Hypsirhophus seeleyanus - ? - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Kaatedocus siberi - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian
Koparion douglassi - ? - Maniraptora ?Troodontidae - Jurassic Late
Labrosaurus ferox - Colorado - Carnosauria Allosauridae - Jurassic Late Kimmeridgian
Labrosaurus sulcatus - Colorado - Incertae Sedis \\\\\\\"Carnosaurs\\\\\\\" Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Laelaps trihedrodon - Colorado - Carnosauria Allosauridae - Jurassic Late Tithonian
Laosaurus celer - Wyoming - Dryosauridae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Laosaurus consors - ? - Ornithopoda Hypsilophodontidae - Jurassic Late
Laosaurus gracilis - ? - Ornithopoda Hypsilophodontidae - Jurassic Late
Marshosaurus bicentesimus - Utah - Theropoda Incertae Sedis \\\\\\\"Carnosaurs\\\\\\\" - Jurassic Late Kimmeridgian Tithonian
Morosaurus agilis - Colorado - Cetiosauridae Cetiosaurinae - Jurassic Late Kimmeridgian Tithonian
Morosaurus lentus - Utah, Wyoming - Camarasauridae Camarasaurinae -Jurassic Late Kimmeridgian Tithonian
Mymoorapelta maysi - Colorado - Ankylosauria Polacanthidae - Jurassic Late Kimmeridgian
Nanosaurus agilis - Colorado, Wyoming - Dryosauridae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Nanosaurus rex - Colorado - Ornithopoda Hypsilophodontidae - Jurassic Late Kimmeridgian Tithonian
Ornitholestes hermanni - Utah, Wyoming - Tetanurae Coelurosauria - Jurassic Late Kimmeridgian Tithonian
Othnielia rex - Colorado, Utah, Wyoming - Ornithopoda Hypsilophodontidae - Jurassic Late Kimmeridgian Tithonian
Othnielosaurus consors - Utah, Wyoming - Ornithopoda Hypsilophodontidae - Jurassic Late
Poekilopleuron valens - Colorado - Carnosauria Allosauridae - Jurassic Late Tithonian
Saurophaganax maximus - Colorado - Carnosauria Allosauridae - Jurassic Late Kimmeridgian Tithonian
Saurophagus maximus ? - Oklahoma - Carnosauria Allosauridae - Jurassic Late
Seismosaurus halli - New Mexico - Sauropoda Diplodocidae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus affinis - Utah - Stegosauridae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Stegosaurus armatus - Colorado, Utah, Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus longispinus - ?Utah, Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus stenops - Colorado, Wyoming, Utah - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus sulcatus - Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus ungulatus - Utah, Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Stokesosaurus clevelandi - Colorado, Utah - Tetanurae ?Carnosauria - Jurassic Late Kimmeridgian Tithonian
Supersaurus vivianae - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Suuwassea emilieae - Montana - Diplodocidae [Flagellicaudata] - Jurassic Late ?Tithonian
Tanycolagreus topwilsoni - Wyoming - Tetanurae Coelurosauria - Jurassic Late Kimmeridgian Tithonian
Tichosteus aequifacies - Colorado - Iguanodontia Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Tichosteus lucasanus - Colorado - Iguanodontia Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Titanosaurus montanus - Colorado - Diplodocidae Nomina Dubia - Jurassic Late Kimmeridgian Tithonian
Torvosaurus tanneri - Colorado - Tetanurae ?Carnosauria - Jurassic Late Kimmeridgian Tithonian
Ultrasauros macintoshi - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Uteodon aphanoecetes - Utah - Iguanodontia [Styracosterna] -Jurassic Late Tithonian
Wyomingraptor - Wyoming - Allosauridae Nomen Nudem - Jurassic Late Kimmeridgian
Dinosaur eggshell - Colorado - Dinosauria - Jurassic Late Kimmeridgian Tithonian
Ornithopod footprints - Colorado - Ornithopoda - Jurassic Late Kimmeridgian Tithonian
Sauropod footprints - Colorado - Sauropoda - Jurassic Late Kimmeridgian Tithonian
Theropod footprints - Colorado - Theropoda - Jurassic Late Kimmeridgian Tithonian
Apatosaurus sp. - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Diplodocus sp. - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Elaphrosaurus sp. - Colorado - Ornithomimosauria Incertae Sedis - Jurassic Late Kimmeridgian Tithonian
Ornithischia indet. - Colorado - Ornithischia - Jurassic Late Kimmeridgian Tithonian
Ornithomimosaur indet. -Colorado - Ornithomimosauria Incertae Sedis - Jurassic Late Kimmeridgian Tithonian
Stegosaurus sp. - Colorado - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Undescribed allosaurid (Jensen, 1985] - Colorado - Theropoda Allosauridae - Jurassic Late Kimmeridgian Tithonian
Undescribed diplodocid (Jensen, 1985) - Colorado - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Undescribed iguanodontid (Armstrong pers. comm.) - Colorado - Ornithopoda Iguanodontia - Jurassic Late Kimmeridgian Tithonian
Camarasaurus sp. - Montana - Sauropoda Camarasauridae - Jurassic Late Kimmeridgian Tithonian
Diplodocus sp. - Montana - Diplodocidae Diplodocinae - Jurassic Late Kimmeridgian Tithonian
Ornithischia indet. - Montana - Ornithischia - Jurassic Late Kimmeridgian Tithonian
Sauropoda indet. - Montana - Sauropoda - Jurassic Late Kimmeridgian Tithonian
Stegosaurid indet. - Montana - Stegosauria - Jurassic Late Kimmeridgian Tithonian
Camarasaurus cf. supremus - New Mexico - Sauropoda Camarasauridae - Jurassic Late Kimmeridgian Tithonian
Ornithopod footprints - Oklahoma - Ornithopoda - Jurassic Late Kimmeridgian Tithonian
Sauropod footprints - Oklahoma - Sauropoda - Jurassic Late Kimmeridgian Tithonian
Ceratosaurus sp. - Oklahoma - Theropoda Ceratosauria - Jurassic Late Kimmeridgian Tithonian
Stegosaurus sp. - Oklahoma - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Theropod footprints - South Dakota - Theropoda - Jurassic Late Kimmeridgian Tithonian
?Diplodocid indet. - Utah - Sauropoda Diplodocidae - Jurassic Late Kimmeridgian Tithonian
?Haplocanthosaurus sp. - Utah - Sauropoda Cetiosauridae - Jurassic Late Kimmeridgian Tithonian
Camptosaurus sp. - Utah - Sauropoda Camptosauridae - Jurassic Late Kimmeridgian Tithonian
Dinosaur eggshell - Utah - Dinosauria - Jurassic Late Kimmeridgian Tithonian
Sauropoda indet. - Utah - Sauropoda - Jurassic Late Kimmeridgian Tithonian
Stegosaurus sp. - Utah - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian
Theropoda indet - Utah - Theropoda - Jurassic Late Kimmeridgian Tithonian
BYU 2028: Fragmentary skull and dentary. Note: Dentary shows similarities to Labrosaurus ferox. - Utah Upper Brushy Basin Member - Carnosauria Allosauridae - Jurassic Late Tithonian
Camarasaurus sp. - Wyoming - Sauropoda Camarasauridae - Jurassic Late Kimmeridgian Tithonian
Diplodocus sp. - Wyoming - Sauropoda Diplodocidae - Jurassic Late Kimmeridgian Tithonian
Stegosaurus sp. - Wyoming - Stegosauria Stegosauridae - Jurassic Late Kimmeridgian Tithonian