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Rock formation in the western United States
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile
Morrison_Formation
The Morrison Formation is a distinctive sequence of Late Jurassic sedimentary rock that is found in the western United States, which has a wide assortment
Paleobiota of the Morrison Formation
Paleobiota_of_the_Morrison_Formation
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rocks that is found in the western United States, which has been the most
List of dinosaurs of the Morrison Formation
List_of_dinosaurs_of_the_Morrison_Formation
Basin Member of the Morrison Formation (Utah, United States), estimated to be the largest stegosaurid specimen from the Morrison Formation reported to date
2026 in archosaur paleontology
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is the exact opposite of the Middle Jurassic. The Late Jurassic Morrison Formation is found in several U.S. states, including Colorado, Utah, Wyoming
List of North American dinosaurs
List_of_North_American_dinosaurs
Mountain range of the Southern Rocky Mountains of North America
a new environment brought rise to a new formation, the sandstone Morrison Formation. The Morrison Formation contains some of the best fossils of the
Front_Range
Genus of diplodocid sauropod dinosaur
years ago (mya) during the Kimmeridgian and Tithonian ages in the Morrison Formation of what is now Utah and Wyoming. For decades, the animal was thought
Brontosaurus
Extinct clade of armored dinosaurs
Morrison Formation (Upper Jurassic, Western USA)" (PDF). Sedimentary Geology. Reconstruction of the Extinct Ecosystem of the Upper Jurassic Morrison Formation
Stegosauria
Susannah (2019). "Two new stegosaur specimens from the Upper Jurassic Morrison Formation of Montana, USA". Acta Palaeontologica Polonica. 64. doi:10.4202/app
List of dinosaur specimens with nicknames
List_of_dinosaur_specimens_with_nicknames
Genus of theropod dinosaur
come from North America's Morrison Formation, with material also known from the Alcobaça, Bombarral, and Lourinhã formations in Portugal. It was known
Allosaurus
Taxonomy of a dinosaur genus
scientifically and in public perception. It is the most common theropod in the Morrison Formation, an important fossil deposit in the Western US, accounting for 70
Taxonomy_of_Allosaurus
Genus of diplodocid sauropod dinosaurs (fossil)
being potentially from among the youngest deposits of the formation. The Morrison Formation records an environment and time dominated by gigantic sauropod
Diplodocus
Town in Colorado, United States
regional geologic layer of Late Jurassic age, the Morrison Formation, was named after the town of Morrison, and is today famous as the first discovery site
Morrison,_Colorado
Dubious saurischian dinosaur genus
dinosaur, possibly a sauropod, from the Late Jurassic (Kimmeridgian) Morrison Formation of Oklahoma, United States. This taxon was historically considered
Saurophaganax
Fundamental unit of lithostratigraphy
geographic name plus either "Formation" or a descriptive name. Examples include the Morrison Formation, named for the town of Morrison, Colorado, and the Kaibab
Geological_formation
Genus of theropod dinosaur from the Late Jurassic period
skeleton discovered in Garden Park, Colorado, in rocks belonging to the Morrison Formation. The type species is Ceratosaurus nasicornis. The Garden Park specimen
Ceratosaurus
Fossil locality in Utah, US
medium-sized theropods, and one large theropod. The tracksite is part of the Morrison Formation, one of the most important dinosaur-bearing deposits in North America
Copper Ridge dinosaur tracksite
Copper_Ridge_dinosaur_tracksite
Sauropod dinosaur genus from Late Jurassic period
Kimmeridgian to early Tithonian age, and are now known from fossils in the Morrison Formation of modern-day Colorado, Oklahoma, New Mexico, Wyoming, and Utah in
Apatosaurus
Stegosaurus fossil
unknown species in the genus Stegosaurus, discovered in Colorado's Morrison Formation in 2022. Dated to the Late Jurassic epoch, it is the largest known
Apex_(dinosaur)
Genus of Late Jurassic armored dinosaur
years ago. Of the species that have been classified in the upper Morrison Formation of the western US, only three are universally recognized: S. stenops
Stegosaurus
Genus of ornithischian dinosaurs
extinct genus of neornithischian dinosaur from the Late Jurassic Morrison Formation of Colorado, United States. The type species is Enigmacursor mollyborthwickae
Enigmacursor
Sauropod dinosaur genus from the late Jurassic Period
belong to the genus, making it one of the rarer sauropods of the Morrison Formation. It is regarded as a high browser, possibly cropping or nipping vegetation
Brachiosaurus
Clade of reptiles
ornithischians and large sauropods. Examples of this include the Morrison Formation of North America and Tendaguru Beds of Tanzania. Dinosaurs in China
Dinosaur
Megalosaurid theropod dinosaur genus from Late Jurassic period
together with Supersaurus remains, proved present in rocks of the Morrison Formation. From 1972 onward, the site was excavated by Jensen and Kenneth Stadtman
Torvosaurus
Geologic formation in the United States
occurs between the underlying Morrison Formation and overlying Naturita Formation (sometimes formerly called the Dakota Formation). It is composed of non-marine
Cedar_Mountain_Formation
Genus of dinosaur from the Late Jurassic
the Morrison Formation in the western United States, including several nearly complete skeletons. It is the most common dinosaur in the Morrison Formation
Camarasaurus
Geological formation and paleontological site in Tanzania
Shangshaximiao Formations in China, the Toqui Formation of Chile and Cañadón Calcáreo Formation and the Morrison Formation, with the presence of dinosaurs with
Tendaguru_Formation
Natural heritage site in Colorado, United States
naval officer, discovered the first ever dinosaur material in the Morrison Formation at Dinosaur Ridge. The same year, excavation began under the direction
Dinosaur_Ridge
Diplodocid sauropod dinosaur genus from Upper Jurassic Period
more familiar Diplodocus. Definitive remains have been found in the Morrison Formation from the Upper Jurassic Period of South Dakota, Utah and Montana,
Barosaurus
Extinct genus of dinosaurs
belonging to the family Piatnitzkysauridae, from the Late Jurassic Morrison Formation of Utah and possibly Colorado. During the 1960s, over fourteen thousand
Marshosaurus
a sauropod found in Kimmeridgian-aged sediments pertaining to the Morrison Formation, Wyoming. It was found in the Dana Quarry and "Barackosaurus" was
List of informally named dinosaurs
List_of_informally_named_dinosaurs
Late Jurassic geological formation in Portugal
The formation is mostly Late Jurassic in age (Kimmeridgian/Tithonian). It is notable for containing a fauna especially similar to that of the Morrison Formation
Lourinhã_Formation
Paleontological research in the U.S. state of Colorado
Morrison Formation, both sauropods and theropods left behind footprints. Only two large tracksites of fossil footprints are known from the Morrison Formation
Paleontology_in_Colorado
Extinct genus of dinosaurs
the Late Jurassic in North America. Its fossils are known from the Morrison Formation of the south-western United States. The type and only species, Nanosaurus
Nanosaurus
recovered from named geologic formations (e.g., the Morrison Formation or the Hell Creek Formation). When this is not the case, a city or landmark near
List of sauropodomorph type specimens
List_of_sauropodomorph_type_specimens
Appalachian dinosaurs List of archosaurs of the Chinle Formation List of dinosaurs of the Morrison Formation List of South American dinosaurs List of prehistoric
Lists_of_prehistoric_animals
Extinct genus of dinosaurs
5, in the Upper Brushy Basin Member, of the Morrison Formation. In the Late Jurassic Morrison formation of Western North America, Dryosaurus remains
Dryosaurus
Extinct genus of dinosaurs
from his collectors at Quarry 13 near Como Bluff, Wyoming in the Morrison Formation and C. amplus based on the holotype YPM 1879, a foot found by Arthur
Camptosaurus
American paleontologist
and the dryolestid mammal Amblotherium megistodon, both from the Morrison Formation. Born November 3, 1966, San Diego, California. High School, Los Gatos
John_R._Foster
spectacular complete skeleton of dinosaur Allosaurus (Marsh -1877), U.S.A Morrison-Formation, Upper Jurassic". www.gazette-drouot.com. Retrieved 2021-11-01. "How
List of dinosaur specimens sold at auction
List_of_dinosaur_specimens_sold_at_auction
Genus of diplodocid sauropod dinosaurs
diplodocid sauropod dinosaurs from the Late Jurassic (Kimmeridgian) Morrison Formation of northern Wyoming, United States. The genus contains a single species
Ardetosaurus
Extinct subfamily of dinosaurs
to this group. All members are known from the Late Jurassic-aged Morrison Formation of the American West, dating to between 157 and 146.8 million years
Apatosaurinae
Dinosaur mass and length estimates
fragile legacy of Amphicoelias fragillimus (Dinosauria: Sauropoda; Morrison Formation - Latest Jurassic)". PeerJ PrePrints. doi:10.7287/peerj.preprints
Dinosaur_size
Extinct genus of dinosaurs
the specimen was determined to have come from the Late Jurassic-era Morrison Formation, in the youngest layers, separate from those that held the Camarasaurus
Amphicoelias
Mapped bedrock unit in the United States
Group, in Wyoming. Despite its presence below the highly studied Morrison Formation, the Chugwater receives little attention. The most noticeable feature
Chugwater_Formation
19th-century period of competitive fossil hunting
Brachiosaurid Sauropod Dinosaur Material From the Upper Jurassic Morrison Formation, Colorado, USA". The Anatomical Record. 303 (4): 732–758. doi:10.1002/ar
Bone_Wars
Extinct clade of saurischian dinosaurs
could suffer from such pathologies. A diplodocid specimen from the Morrison Formation referred to as "Dolly" was described in 2022 with evidence of a severe
Sauropoda
Extinct genus of dinosaurs
Colorado, in the middle Morrison Formation of Colorado in 1972. The fossil remains came from the Brushy Basin Member of the formation, dating between 153
Supersaurus
Hard, fine-grained sedimentary rock composed of cryptocrystalline silica
burial and diagenesis, these are altered to Magadi-type chert. The Morrison Formation contains Magadi-type chert that may have formed in the alkaline Lake
Chert
Extinct genus of dinosaurs
genus Diplodocus. The specimen was found in rocks belonging to the Morrison Formation at the Carnegie Quarry at Dinosaur National Monument. Athenar existed
Athenar
dinosaurs from the Carnegie Quarry at Dinosaur National Monument (Morrison Formation; Utah, United States), interpreted as indicating that Allosaurus did
2025 in archosaur paleontology
2025_in_archosaur_paleontology
Extinct species of reptile
exposures of the Upper Jurassic (Kimmeridgian to Tithonian stages) Morrison Formation. The type species, G. parkpinorum (originally G. parkpini) was described
Gargoyleosaurus
Extinct genus of reptiles
like Rhamphorhynchus. Harpactognathus was found in the strata of the Morrison Formation, which bears a variety of other fossils. This includes several other
Harpactognathus
Extinct genus of dinosaurs
known as UUVP 2938) was uncovered in the Brushy Basin Member of the Morrison Formation dating from the early Tithonian stage, about 150 million years old
Stokesosaurus
Extinct genus of dinosaurs
Marsh in 1879. It is known from one partial skeleton found in the Morrison Formation of Wyoming, United States. It was a small bipedal carnivore with elongate
Coelurus
Geologic formation in New Mexico, US
corresponding to the Bluff Formation. Then comes a break corresponding to the pinch-out of the Recapture Member of the Morrison Formation, another sandstone interval
Zuni_Sandstone
Topics referred to by the same term
Morrison, Colorado Morrison, Illinois Morrison, Iowa Morrison, Missouri Morrison, Oklahoma Morrison, Tennessee Morrison, Wisconsin, a town Morrison (community)
Morrison
Geology of an area in Utah, US
and in swampy plains during the Upper Jurassic. This became the Morrison Formation, which is locally divided into three members (from oldest to youngest);
Geology of the Capitol Reef area
Geology_of_the_Capitol_Reef_area
Fossil site in Utah, U.S.
site in Utah that dates to the Jurassic period. It is located in the Morrison Formation. It is part of Dinosaur National Monument, which was founded to protect
Carnegie_Quarry
"Exceptional stegosaur integument impressions from the Upper Jurassic Morrison Formation of Wyoming". Swiss Journal of Geosciences. 103 (2): 163–171. Bibcode:2010SwJG
List of dinosaur specimens with preserved soft tissue
List_of_dinosaur_specimens_with_preserved_soft_tissue
Geological formation in the United States
units Morrison Formation Cretaceous–Paleogene formations Denver Formation Ferris Formation Lefipán Formation, Argentina López de Bertodano Formation, Antarctica
Hell_Creek_Formation
Geological formation in the United States
Park Service. The Cloverly Formation rests disconformably on the Morrison Formation and is conformably overlain by the Thermopolis Shale. It is subdivided
Cloverly_Formation
Genus of stegosaurian dinosaur
North American Morrison Formation within the Stegosauridae. Fossils of K. aethiopicus have been found only in the Tendaguru Formation, dated to the late
Kentrosaurus
Extinct genus of dinosaurs
1878 from remains discovered in the Upper Jurassic (Kimmeridgian) Morrison Formation of Wyoming. The validity of this genus is doubtful because it is based
Laosaurus
Geologic formation in Four Corners region, US
Formation (Utah and western Colorado) or Todilto Formation (southwest Colorado and New Mexico) but is separated from the overlying Morrison Formation
Summerville_Formation
Extinct genus of dinosaurs
named in 2001. It is from an older part of the Morrison Formation, and so a little older than other Morrison stegosaurs. Several relatively complete skeletons
Hesperosaurus
Extinct genus of dinosaurs
genus of theropod dinosaur from the Upper Jurassic, probably the Morrison Formation, of Middle Park, Colorado. It contains one species, Antrodemus valens
Antrodemus
Genus of reptiles (fossil)
County, Utah. It is known from the middle of the Brushy Basin Member, Morrison Formation. The genus was named by Andrew T. McDonald in 2011 and the type species
Uteodon
Extinct genus of dinosaurs
theropod dinosaur of the late Jurassic (Brushy Basin Member of the Morrison Formation, middle Kimmeridgian age, about 154 million years ago) of Western
Ornitholestes
Extinct genus of lizards
is an extinct genus of ardeosaurid lizard from the Late Jurassic Morrison Formation of the United States. The type specimen of Helioscopos, given the
Helioscopos
Family of amphibians
pelobatids, Elkobatrachus, was described in 2006. In the Jurassic Morrison Formation, pelobatids are represented by the ilium of an unnamed but indeterminate
European_spadefoot_toad
Species of sauropod dinosaur
valid. Specimens of Camarasaurus supremus have been found in the Morrison Formation. It is primarily known from several disarticulated skeletons from
Camarasaurus_supremus
Social insects related to cockroaches
Karabastau Formation in 2024. Further evidence of a Jurassic origin is the assumption that the extinct mammaliaform Fruitafossor from Morrison Formation consumed
Termite
Genus of dinosaurs
from the Tithonian strata of uppermost part of the Upper Jurassic Morrison Formation. The fossils now accepted as Hypsirophus were fragmentary and came
Hypsirophus
Geologic formation in the western United States
overlying Morrison Formation or to the Bluff Formation. The Recapture Member is separated from the Salt Wash Member of the Morrison Formation by the regional
Bluff_Formation
State park in Utah, United States
rock Morrison Formation Petrified wood forms through permineralization. Petrified logs in place A 50-foot fossil log from the Morrison Formation. "Escalante
Escalante Petrified Forest State Park
Escalante_Petrified_Forest_State_Park
Extinct genus of reptiles
locality, Albany County, Wyoming, from the Salt Wash Member of the Morrison Formation, dating to the Kimmeridgian-Tithonian. At first the find was considered
Tanycolagreus
Genus of mammals
is an extinct genus of Late Jurassic mammal from the Morrison Formation and the Alcobaça Formation of Portugal. The type species Dryolestes priscus is
Dryolestes
to show strong similarities to that of the Morrison Formation in the United States and the Lourinha Formation in Portugal. For example, similar theropods
List_of_African_dinosaurs
Genus of ctenochasmatid pterosaur from the Late Jurassic
pterodactyloid pterosaur from the Kimmeridgian-Tithonian-age Upper Jurassic Morrison Formation of Colorado, United States. In 1992, a team from the Denver Museum
Kepodactylus
National monument in Colorado and Utah, United States
and conglomerate bed of alluvial or river bed origin known as the Morrison Formation from the Jurassic Period some 150 million years old. The dinosaurs
Dinosaur_National_Monument
Extinct genus of dinosaurs
discovered the type skeleton Hesperornithoides in Jimbo Quarry of the Morrison Formation, overlying the excavation site of Supersaurus vivianae, near Douglas
Hesperornithoides
Stegosaur tracks
ichnogenus erected in 1998 for the second set of stegosaur tracks from the Morrison Formation. The tracks were found near Arches National Park, also in Utah. Unlike
Stegopodus
Extinct genus of dinosaurs
Haplocanthosaurus specimens have been found in the lowermost layer of the Morrison Formation, along with Hesperosaurus mjosi, Brontosaurus yahnahpin, and Allosaurus
Haplocanthosaurus
Freshwater crustaceans
member of the modern family Cambaridae is known from the Late Jurassic Morrison Formation of North America. The earliest records of other modern families date
Crayfish
Extinct genus of ornithischian dinosaur
Jurassic (Kimmeridgian-Tithonian, around 155 to 150 million years ago) Morrison Formation (Brushy Basin Member) of western Colorado and central Utah, USA. The
Mymoorapelta
Fossil site
Quarry (MDQ) is a Late Jurassic (Kimmeridgian) fossil site in the Morrison Formation that is located at the base of the Pryor Mountains in Carbon County
Mother's_Day_Quarry
Second period of the Mesozoic Era
Jurassic, as evidenced by Iridotriton, found in the Late Jurassic Morrison Formation. The stem-caecilian Eocaecilia is known from the Early Jurassic of
Jurassic
Species of sauropod
found in Dinosaur National Monument and the middle layers of the Morrison Formation. Camarasaurus lentus is among the best-known sauropod species, with
Camarasaurus_lentus
Extinct genus of dinosaurs
biological ages, found in Tithonian (Late Jurassic) rocks of the Morrison Formation in Colorado. Fruitadens is one of the smallest known ornithischian
Fruitadens
Sauropod dinosaur genus from the late Jurassic Period in Lindi Region, Tanzania
as a species of the North American sauropod Brachiosaurus from the Morrison Formation, as Brachiosaurus brancai. Recent research shows that the differences
Giraffatitan
recovered from named geologic formations (e.g. the Morrison Formation or the Hell Creek Formation). When this is not the case, a city or landmark near
List of thyreophoran type specimens
List_of_thyreophoran_type_specimens
Mountain in the American state of California
metasedimentary rocks are exposed on Mount Morrison. Formations include the Ordovician Convict Lake Formation (argillite and siliceous hornfels and slate)
Mount_Morrison_(California)
National monument in Emry County, Utah, United States
the San Rafael Swell, a part of the geological layers known as the Morrison Formation. Over 16,200 bones have been excavated from this Jurassic excavation
Jurassic_National_Monument
ISSN 1932-6203. PMC 5699823. PMID 29166406. "Morrison Formation." Weishampel, et al. (2004). Pg. 543-545. "Shaximiao Formation." Weishampel, et al. (2004). Pg. 542
List of stratigraphic units with dinosaur body fossils
List_of_stratigraphic_units_with_dinosaur_body_fossils
the ichnofossil Eopolis ekdalei from the Brushy Basin Member of the Morrison Formation (Utah, United States) preserved with plant, insect and fungal remains
2026_in_paleontology
Lost specimen of giant sauropod dinosaur from Colorado
Maraapunisaurus is a genus of sauropod dinosaur from the Late Jurassic Morrison Formation of western North America. It contains one species, Maraapunisaurus
Maraapunisaurus
Long, narrow ridge
interbedded mudstone, siltstone, and thinly-bedded sandstones of the Morrison Formation of Jurassic age. Dinosaur Ridge is only a short segment of the Dakota
Hogback_(geology)
Paleontological site in Colorado, United States
United States, near the town of Delta. Its geology forms a part of the Morrison Formation and has famously yielded a great diversity of animal remains from
Dry_Mesa_Quarry
English palaeontologist
Her most recent research has focused on the stratigraphy of the Morrison Formation of the Western United States. She was one of the lead scientists for
Susannah_Maidment
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