Como Bluff is a long ridge extending east–west, located between the towns of Rock River and Medicine Bow,

Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

. The ridge is an

anticline In structural geology, an anticline is a type of Fold (geology), fold that is an arch-like shape and has its oldest Bed (geology), beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex curve, c ...

, formed as a result of compressional geological folding. Three geological formations, the Sundance, the

Morrison Morrison may refer to: People * Morrison (surname), people with the Scottish surname Morrison * Morrison Heady (1829–1915), American poet * Morrison Mann MacBride (1877–1938), Canadian merchant Places in the United States * Morrison, Colorad ...

, and the Cloverly Formations, containing

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...

remains from the Late Jurassic of the

Mesozoic Era The Mesozoic Era is the era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods. It is characterized by the dominance of archosaurian reptiles such as the dinosaurs, and of gymnosperms s ...

, are exposed. Nineteenth-century paleontologists discovered many well-preserved specimens of dinosaurs, as well as mammals, turtles, crocodilians, and fish from the Morrison Formation. Because of this, Como Bluff is considered to be one of the major sites for the early discovery of

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

remains. Among the species discovered is the only known specimen of ''

Coelurus ''Coelurus'' ( ) is a genus of coelurosaurian dinosaur from the Late Jurassic period (mid-late Kimmeridgian faunal stage, 155–152 million years ago). The name means "hollow tail", referring to its hollow tail vertebrae (Greek κοῖλ� ...

''. Significant discoveries were made in 22 different areas scattered along the entire length of the ridge. It is included on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the Federal government of the United States, United States federal government's official United States National Register of Historic Places listings, list of sites, buildings, structures, Hist ...

as well as the

National Natural Landmark The National Natural Landmarks (NNL) Program recognizes and encourages the conservation of outstanding examples of the natural history of the United States. It is the only national natural areas program that identifies and recognizes the best e ...

list.

History of discovery

The discovery of dinosaurs at Como Bluff has been recounted numerous times, most notably by Schuchert and LeVene, Shur,

Ostrom Ostrom or Öström is a Swedish surname meaning "island stream". History Many of the Ostroms in North America are descendants of a Dutch immigrant to New Amsterdam in the 1600s. The name was van Oosteroom and originated in the area of Utrecht ...

and McIntosh, and Jaffe. Most of the specimens were collected by men working for O.C. Marsh between 1877 and 1889, although some were collected by the Hubbel brothers for E.D. Cope between 1879 and 1880. The

American Museum of Natural History The American Museum of Natural History (AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. Located in Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 21 interconn ...

(AMNH) excavated in 189

189

finding two partial skeletons of sauropods. A summary of the quarries and their contents is given below. In later years, the American Museum of Natural History and

Yale University Yale University is a Private university, private Ivy League research university in New Haven, Connecticut, United States. Founded in 1701, Yale is the List of Colonial Colleges, third-oldest institution of higher education in the United Stat ...

jointly reopened Quarry 9, the Mammal Quarry, 1968–1970, finding only a few specimens. More recently,

Robert Bakker Robert Thomas Bakker (born March 24, 1945) is an American paleontologist who helped reshape modern theories about dinosaurs, particularly by adding support to the theory that some dinosaurs were endothermic (warm-blooded). Along with his mentor ...

has done some collecting there with a variety of groups. In addition to the major significance of dinosaur discoveries at Como Bluff, the site has also been the source of significant early mammal fossils. In early 1878,

Marsh In ecology, a marsh is a wetland that is dominated by herbaceous plants rather than by woody plants.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p More in genera ...

was ecstatic to find that one of his men had uncovered a fossil from a Jurassic mammal. Within a year, the historic Quarry 9 at Como was discovered, producing an astounding 250 specimens, which increased the knowledge of Jurassic mammals exponentially.

Como Bluff historical quarries (pre-1900)

Data source:. . .Division of Paleontology, American Museum of Natural History,
(h)=

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

AMNH Quarries

Excavated by the

AMNH Quarry 1

;

Dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

ia :

Saurischia Saurischia ( , meaning "reptile-hipped" from the Greek ' () meaning 'lizard' and ' () meaning 'hip joint') is one of the two basic divisions of dinosaurs (the other being Ornithischia), classified by their hip structure. Saurischia and Ornithi ...

Sauropoda Sauropoda (), whose members are known as sauropods (; from ''wikt:sauro-, sauro-'' + ''wikt:-pod, -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative t ...

:::'' Diplodocus'' sp

AMNH Quarry 2

;Dinosauria :Saurischia ::Sauropoda :::'' Brontosaurus excelsus'' :::'' Camarasaurus'' sp,

AMNH localities unknown

(some could be from Quarry 1 or 2) ;Reptilia :

Testudines Turtles are reptiles of the order (biology), order Testudines, characterized by a special turtle shell, shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Crypt ...

::Amphichelydia :::'' Glyptops plicatus'' :

Squamata Squamata (, Latin ''squamatus'', 'scaly, having scales') is the largest Order (biology), order of reptiles; most members of which are commonly known as Lizard, lizards, with the group also including Snake, snakes. With over 11,991 species, it i ...

::? Sauria indeterminant :: Lacertilia :::'' Paramacellodus'' sp. :

Choristodera Choristodera (from the Greek χωριστός ''chōristos'' + δέρη ''dérē'', 'separated neck') is an extinct order of semiaquatic diapsid reptiles that ranged from the Middle Jurassic, or possibly Triassic, to the Miocene (168 to 20 or p ...

:::'' Cteniogenys antiquus'' :

Crocodilia Crocodilia () is an order of semiaquatic, predatory reptiles that are known as crocodilians. They first appeared during the Late Cretaceous and are the closest living relatives of birds. Crocodilians are a type of crocodylomorph pseudosuchia ...

:: Mesosuchia :::'' Goniopholis'' sp.

Frederick Brown's Quarries

Brown's Quarry A

;Dinosauria :

Ornithischia Ornithischia () is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure superficially similar to that of birds. The name ''Ornithischia'', or "bird-hipped", reflects this similarity and is derived from the Greek ...

Stegosauria Stegosauria is a group of Herbivore, herbivorous ornithischian dinosaurs that lived during the Jurassic and early Cretaceous Period (geology), periods. Stegosaurian fossils have been found mostly in the Northern Hemisphere (North America, Europe a ...

:::''

Stegosaurus ''Stegosaurus'' (; ) is a genus of herbivorous, four-legged, armored dinosaur from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails. Fossils of the genus have been fo ...

'' sp.

Brown's Quarry B

;Dinosauria :Ornithischia ::Stegosauria :::''Stegosaurus'' sp.

Brown's Quarry C

;Dinosauria :Saurischia ::

Theropoda Theropoda (; from ancient Greek iktionary:θηρίον, , (''therion'') "wild beast"; wiktionary:πούς, , wiktionary:ποδός, (''pous, podos'') "foot" is one of the three major groups (Clade, clades) of Dinosaur, dinosaurs, alon ...

:::''

Allosaurus fragilis ''Allosaurus'' ( ) is an extinct genus of theropoda, theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic Geologic time scale, period (Kimmeridgian to late Tithonian Geologic time scale, ages). The first fossil ...

Brown's Quarry D

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus fragilis''

Brown's Quarry G

;Dinosauria :Saurischia ::Sauropoda :::''Camarasaurus'' sp.

Arthur Lakes Quarry 1A. (Big Canyon Quarry)

Excavated by Arthur Lakes. ;Dinosauria :Saurischia ::Theropoda :::''Allosaurus'' sp. ::Sauropoda :::''Camarasaurus'' sp. :Ornithischia ::

Ornithopoda Ornithopoda () is a clade of ornithischian dinosaurs, called ornithopods (). They represent one of the most successful groups of herbivorous dinosaurs during the Cretaceous. The most primitive members of the group were bipedal and relatively sm ...

:::''Camptosaurus amplus'' (h) (now ''

Allosaurus ''Allosaurus'' ( ) is an extinct genus of theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic period ( Kimmeridgian to late Tithonian ages). The first fossil remains that could definitively be ascribed to th ...

'' sp.)

E.D. Cope's Quarries

Excavated by

Edward Drinker Cope Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American zoologist, paleontology, paleontologist, comparative anatomy, comparative anatomist, herpetology, herpetologist, and ichthyology, ichthyologist. Born to a wealthy Quaker fam ...

Cope's Quarry 3

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus'' sp.

Cope's Quarry 4

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus'' sp. :Ornithischia ::Stegosauria :::''Stegosaurus'' sp.

Cope's Quarry 5

;Reptilia : Pterosauria :::'' Dermodactylus montanus'' ;Dinosauria :Saurischia ::Sauropoda :::''

Apatosaurus ''Apatosaurus'' (; meaning "deceptive lizard") is a genus of herbivorous sauropod dinosaur that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, ''A. ajax'', in 1877, a ...

'' sp.

Cope's localities unknown

(could be from Quarry 1, 2) ;Reptilia :Testudines ::Amphichelydia :::'' Dinochelys'' sp. :::''Glyptops plicatus'' :Crocodilia ::Mesosuchia :::''Goniopholis'' sp. ;Dinosauria :Ornithischia ::Ornithopoda :::?''

Camptosaurus ''Camptosaurus'' ( ) is a genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic Period (geology), period of western North America and possibly also Europe. The name means 'flexible lizard' (Ancient Greek, Greek (') meaning ...

'' sp. ::Stegosauria :::''Stegosaurus'' sp. ;

Mammalia A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bon ...

:genus and species indeterminant

William Harlow Reed's Quarries

Excavated by William Harlow Reed.

Reed's Quarry 1

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus atrox'' (h) (now ''Allosaurus fragilis'') ::Sauropoda :::'' Camarasaurus grandis'' (h) :::''Camarasaurus impar'' (h) (now ''Camarasaurus grandis'') :::''Camarasaurus robustus'' (h) (now ''Camarasaurus grandis'') :::''Pleurocoelus montanus'' (h) (now ''Camarasaurus grandis'') :::''Diplodocus'' sp. ;Mammalia :::genus and species indeterminant

Reed's Quarry 1 ½

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus fragilis'' ::Sauropoda :::genus and species indeterminant

Reed's Quarry 2

;Dinosauria :Saurischia ::Sauropoda :::''Apatosaurus'' sp.

Reed's Quarry 3

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus lucaris'' (h) (now ''Allosaurus'' sp.) ::Sauropoda :::''Camarasaurus grandis'' :Ornithischia ::Ornithopoda :::'' Dryosaurus'' sp. ::Stegosauria :::''Stegosaurus'' sp.

Reed's Quarry 4

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus fragilis'' ::Sauropoda :::''Apatosaurus'' sp. :::''Barosaurus'' sp. :::''Camarasaurus'' sp. :Ornithischia ::Stegosauria :::''Stegosaurus'' sp.

Reed's Quarry 5

;Reptilia :Pterosauria :::''Dermodactylus montanus'' (h) (now ''

nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium,'' it may be impossible to determine whether a ...

'') ;Dinosauria :Saurischia ::Sauropoda :::''Diplodocus'' sp. :Ornithischia ::Ornithopoda :::''Dryosaurus altus'' (h)

Reed's Quarry 6

;Reptilia :Crocodylia ::Mesosuchia :::''Goniopholis'' sp.

Reed's Quarry 7 (Three Trees Quarry)

;Dinosauria :Ornithischia ::Ornithopoda :::'' Laosaurus consors'' (h) (now '' Othnielosaurus consors'')

Reed's Quarry 8

;Reptilia :Testudines ::genus and species indeterminant :Crocodilia ::Mesosuchia :::''Goniopholis'' sp. ;Dinosauria :Saurischia ::Theropoda :::''Allosaurus'' sp. :::'' Coelurus fragilis'' ::Sauropoda :::''Camarasaurus'' sp. :::''Diplodocus'' sp. :Ornithischia ::Stegosauria :::''Stegosaurus'' sp.

Reed's Quarry 9 (Mammal Quarry)

;

Osteichthyes Osteichthyes ( ; ), also known as osteichthyans or commonly referred to as the bony fish, is a Biodiversity, diverse clade of vertebrate animals that have endoskeletons primarily composed of bone tissue. They can be contrasted with the Chondricht ...

Actinopterygii Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class (biology), class of Osteichthyes, bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built ...

::genus and species indeterminant :

Amiiformes The Amiiformes order (biology), order of fish has only two extant taxa, extant species, the bowfins: ''Amia calva'' and ''Amia ocellicauda'', the latter recognized as a separate species in 2022. These Amiiformes are found in the freshwater syste ...

::'' Ophiopsis'' sp. :

Sarcopterygii Sarcopterygii (; )—sometimes considered synonymous with Crossopterygii ()—is a clade (traditionally a class (biology), class or subclass) of vertebrate animals which includes a group of bony fish commonly referred to as lobe-finned fish. The ...

:: Dipnoi :::'' Ceratodus guentheri'' ;

Amphibia Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but excluding the amniotes (tetrapods with an amniotic ...

: Anura :::'' Comobatrachus aenigmatis'' ::Discoglossoidea :::'' Enneabatrachus hechti'' ::

Pelobatidae The European spadefoot toads are a family of frogs, the Pelobatidae, with only one extant genus ''Pelobates'', containing six species. They are native to Europe, the Mediterranean, northwestern Africa, and western Asia. Description The Europe ...

indeterminant ::

Pipoidea Pipoidea are a clade of frogs, that contains the most recent common ancestor of living Pipidae and Rhinophrynidae as well as all its descendants. It is broadly equivalent to Xenoanura. Description The synapomorphies that define Pipoidea are th ...

? :::'' Eobatrachus agilis'' (h) :

Caudata The Caudata are a group of amphibians containing the extant salamanders (the order Urodela) and all extinct species of amphibians more closely related to salamanders than to frogs. They are typically characterized by a superficially lizard-lik ...

::genus and species indeterminant ::'' Comonecturoides marshi'' (h) ;Reptilia :Testudines ::Amphichelydia :::'' Dinochelys whitei'' :::''Glyptops ornatus'' :Squamata ::?Sauria indeterminant ::Lacertilia :::'' Dorsetisaurus'' sp. :::'' Paramacellodus'' sp. :

Rhynchocephalia Rhynchocephalia (; ) is an order of lizard-like reptiles that includes only one living species, the tuatara (''Sphenodon punctatus'') of New Zealand. Despite its current lack of diversity, during the Mesozoic rhynchocephalians were a speciose g ...

:::'' Opisthias rarus'' (h) :::'' Theretairus antiquus'' (h) :Choristodera :::''Cteniogenys antiquus'' (h) :Crocodylia :: Sphenosuchia :::'' Macelognathus vagans'' (h) ::Mesosuchia :::''Goniopholis'' sp. ;Dinosauria :Saurischia ::Theropoda :::''Allosaurus fragilis'' :::'' Ceratosaurus nasicornis'' :::''Coelurus fragilis'' :::'' Ornitholestes hermanni''? :: Tyrannosauroidea :::'' Stokesosaurus clevelandi''? ::Sauropoda :::

Macronaria Macronaria is a clade of sauropod dinosaurs. Macronarians are named after the large diameter of the nasal opening of their skull, known as the external naris, which exceeded the size of the orbit, the skull opening where the eye is located (hence ...

indeterminant ::: Diplodocidae indeterminant :Ornithischia ::Ornithopoda :::''Othnielosaurus consors'' :::''Dryosaurus'' sp. :::''Camptosaurus'' sp. :Stegosauria :::''Stegosaurus'' sp. :Pterosauria :: Rhamphorhynchoidea :::'' Laopteryx priscus'' (h) (now ''nomen dubium'') ;Mammalia :

Docodonta Docodonta is an Order (biology), order of extinct Mesozoic Mammaliaformes, mammaliaforms (advanced cynodonts closely related to true Crown group, crown-group mammals). They were among the most common mammaliaforms of their time, persisting from t ...

Docodontidae Docodonta is an order of extinct Mesozoic mammaliaforms (advanced cynodonts closely related to true crown-group mammals). They were among the most common mammaliaforms of their time, persisting from the Early Jurassic to the Early Cretaceous acr ...

:::'' Docodon affinis'' (h) :::''Docodon crassus'' (h) :::''Docodon striatus'' (h) :::''Docodon superus'' (h) :::''Docodon victor'' (h) :

Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct Order (biology), order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the M ...

Allodontidae Allodontidae (from ancient Greek "ἄλλος" "ὀδούς", "different tooth") is a family of extinct multituberculate mammal that lived in what is now North America during the Upper Jurassic period. They were relatively early mammals and are ...

:::'' Ctenacodon laticeps'' (h) :::''Ctenacodon scindens'' (h) :::''Ctenacodon serratus'' (h) :::''

Psalodon fortis ''Psalodon'' is an extinct genus of North American mammal that lived during the Upper Jurassic period. It's a member of the family Allodontidae within the order Multituberculata. Biostratigraphy Present in stratigraphic zones 2 and 5.Foster, J ...

'' (h) :::''Psalodon potens'' (h) :::?''Psalodon marshi'' (h) :

Triconodonta Eutriconodonta is an order of early mammals. Eutriconodonts existed in Asia (including pre-contact India), Africa, Europe, North and South America during the Jurassic and the Cretaceous periods. The order was named by Kermack ''et al.'' in 1973 ...

:: Amphilestidae :::'' Aploconodon comoensis'' (h) :::'' Comodon gidleyi'' (h) :: Triconodontidae :::'' Priacodon ferox'' (h) :::''Priacodon grandaevus'' (h) :::''Priacodon lulli'' (h) :::''Priacodon robustus'' (h) :::'' Trioracodon bisulcus'' (h) :

Symmetrodonta Symmetrodonta is a group of Mesozoic mammals and mammal-like synapsids characterized by the triangular aspect of the molars when viewed from above, and the absence of a well-developed talonid. The traditional group of 'symmetrodonts' ranges in ...

:: Amphidontidae :::'' Amphidon superstes'' (h) :: Tinodontidae :::'' Tinodon bellus'' (h) :::'' Eurylambda aequicrurius'' : Dryolestida :: Dryolestidae :::'' Amblotherium gracilis'' (h) :::'' Dryolestes priscus'' :::''Dryolestes obtusus'' (h) :::''Dryolestes vorax'' (h) :::'' Laolestes eminens'' (h) :::''Laolestes'' (''Melanodon'') ''goodrichi'' (h) :::''Laolestes'' (''Melanodon'') ''oweni'' (h) :::'' Miccylotyrans minimus'' (h) :: Paurodontidae :::'' Araeodon intermissus'' (h) :::'' Archaeotrigon brevimaxillus'' (h) :::''Archaeotrigon distagmus'' (h) :::'' Comotherium richi'' (h) :::'' Euthlastus cordiformis'' (h) :::'' Paurodon valens'' (h) :::'' Tathiodon agilis'' (h)

Reed's Quarry 10

;Dinosauria :Saurischia ::Sauropoda :::''Brontosaurus excelsus'' (h)

Reed's Quarry 11

;Dinosauria :Saurischia ::Sauropoda :::''Apatosaurus amplus'' (h) (now ''Brontosaurus excelsus'') :Ornithischia ::Stegosauria :::''Stegosaurus duplex'' (h) (now ''Stegosaurus ungulatus'') ;Mammalia :genus and species indeterminant

Reed's Quarry 12 (Robbers' Roost Quarry)

;Reptilia :Testudines ::genus and species indeterminant :Crocodylia ::Mesosuchia :::''Goniopholis'' sp. ;Dinosauria :Saurischia ::Theropoda :::''Allosaurus'' sp. :::''Torvosaurus tanneri'' :::''Coelurus'' sp. :::'' Fosterovenator churei'' ::Sauropoda :::''Camarasaurus'' sp. :::''Diplodocus'' sp. :Ornithischia :ornithopoda ::genus and species indeterminant :Stegosauria :::''Stegosaurus ungulatus'' (h)

Reed's Quarry 13

;Reptilia :Testudines ::Amphichelydia :::''Glyptops plicatulus'' :Crocodylia ::Mesosuchia :::''Goniopholis'' sp. ;Dinosauria :Saurischia ::Theropoda :::''Coelurus agilis'' (h) (part of ''Coelurus fragilis'' holotype) :::''Coelurus fragilis'' (h) :Saurischia ::Sauropoda :::?''

Brachiosaurus ''Brachiosaurus'' () is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about . It was first Species description, described by American paleontologist Elmer S. Riggs in 1903 in paleontology, 1903 from fossi ...

'' sp. :::''Camarasaurus lentus'' (h) :::''Diplodocus'' sp. :Ornithischia ::Ornithopoda :::''Camptonotus dispar'' (h) (now ''Camptosaurus dispar'') :::''Camptosaurus medius'' (h) :::''Camptosaurus nanus'' (h) :::''Camptosaurus browni'' (h) :::''Dryosaurus'' sp. ::Stegosauria :::''Diracodon laticeps'' (h) (now ''Stegosaurus'' sp.) :::''Stegosaurus sulcatus'' (h) :::''Stegosaurus stenops'' :::''Stegosaurus ungulatus''

Reed Quarry 14

;Dinosauria :Saurischia ::Theropoda :::''Allosaurus ferox'' (h) (now ''Allosaurus fragilis'')

References

External links

Como Bluffs fossil quarriesComo Bluff
at the Wyoming State Historic Preservation Office
Dinosaur Fossil Cabin Museum
{{authority control Ridges of Wyoming Landforms of Albany County, Wyoming Landforms of Carbon County, Wyoming Jurassic geology of Wyoming Morrison Formation Paleontology in Wyoming National Natural Landmarks in Wyoming Natural features on the National Register of Historic Places in Wyoming 1970s in paleontology National Register of Historic Places in Albany County, Wyoming