Genre

Valide Éteint

Allosaurus

Marsh 1877

Étymologie Reptile différent

Allosaurus, également francisé allosaure, est un genre fossile de grands dinosaures théropodes ayant vécu durant les étages Kimméridgien et Tithonien du Jurassique supérieur, il y a entre 155 et 145 millions d’années, dans ce qui sont actuellement l'Amérique du Nord et l'Europe. Le nom générique du taxon signifie littéralement « lézard différent », faisant allusion à ses vertèbres concaves uniques observées au moment de sa découverte. Les premiers restes fossiles pouvant être définitivement attribués à ce genre sont décrits en 1877 par le paléontologue américain Othniel Charles Marsh. Le genre a une taxonomie très complexe et comprend au moins trois espèces valides, dont la plus connue est A. fragilis. La majeure partie des restes d’Allosaurus proviennent de la formation de Morrison en Amérique du Nord, avec du matériel également connu de la formation de Lourinhã au Portugal. Pendant plus de la moitié du XXe siècle, l'animal était connu sous le nom d’Antrodemus, mais une étude des restes abondants de la carrière de dinosaures de Cleveland-Lloyd remet le nom d’Allosaurus au premier plan. Figurant parmi les premiers dinosaures théropodes bien connus, ce dernier attire l'attention en dehors des cercles paléontologiques.

Plage temporelle

Trias

Jurassique

Crétacé

Paléogène

Néogène

252 201 145 66 0 Ma

Occurrences PBDB

147

Groupe

Dinosaures

Carnivore Vivant au sol, solitaire Terrestre

cliquer pour agrandir

Allosaurus (Big Al II) (specimen SMA 0005) © The_Wookies · CC BY 2.5 · Wikimedia

Légende en anglais — traduction française non disponible.

PBDB ↗ Wikipedia ↗

Classification

Dinosauria Clade non classé

›

Theropoda Clade non classé

›

Neotheropoda Clade non classé

›

Averostra Clade non classé

›

Tetanurae Clade non classé

›

Allosauroidea Superfamille

›

Allosaurus Genre

Sites de découverte 147 sites géolocalisés

Répartition

Principaux pays

🇺🇸 États-Unis

137

🇵🇹 Portugal

🇩🇪 Allemagne

🇫🇷 France

Formations géologiques

Morrison

137

Alcobaça

Lourinhã

Lepidotus Beds

Distribution temporelle

Berriasien (143.1–137.05 Ma)

Tithonien (149.2–143.1 Ma)

117

Kimméridgien (154.8–149.2 Ma)

Oxfordian (161.5–154.8 Ma)

Espèces (16)

Allosaurus amplus 155 Ma

Allosaurus anax 152 Ma

Allosaurus europaeus 152 Ma

Allosaurus ferox subjective synonym of Allosaurus fragilis 155 Ma

Allosaurus fragilis 155 Ma

Allosaurus jimmadseni 158 Ma

Allosaurus lucaris subjective synonym of Allosaurus fragilis 155 Ma

Allosaurus lucasi 149 Ma

Apatodon mirus subjective synonym of Allosaurus fragilis 155 Ma

Creosaurus atrox subjective synonym of Allosaurus fragilis 155 Ma

Epanterias amplexus subjective synonym of Allosaurus fragilis 155 Ma

Labrosaurus ferox subjective synonym of Allosaurus fragilis 155 Ma

Labrosaurus sulcatus

Laelaps trihedrodon subjective synonym of Allosaurus fragilis 155 Ma

Poicilopleuron valens subjective synonym of Allosaurus fragilis 155 Ma

Saurophagus maximus subjective synonym of Allosaurus fragilis 155 Ma

Synonymes (6)

Antrodemus subjective synonym of Allosaurus

Apatodon subjective synonym of Allosaurus

Creosaurus subjective synonym of Allosaurus

Epanterias subjective synonym of Allosaurus

Labrosaurus subjective synonym of Allosaurus

Saurophagus subjective synonym of Allosaurus

Actualités 1

Model Collector propose un examen exclusif des bêtes de l'Allosaure mésozoïque à l'échelle 1:35

écaille Mésozoïque Allosaurus Dinosaurus

Nos remerciements au collectionneur dévoué de modèles de dinosaures qui a envoyé à Everything Dinosaur une revue des bêtes du Mésozoïque, Allosaurus fragilis. L'Allosaure est l'un de nos dinosaures préférés et nous sommes également de grands fans de la gamme de modèles Les Bêtes du Mésozoïque. C'est génial d'avoir les Bêtes du Mésozoïque

21/05/2026 everythingdinosaur ⚙ Traduction automatique

Images 4

Bibliographie

Description originale

O. C. Marsh. 1877. Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14:514-516 DOI ↗

Bibliographie (74)

F. Batista, L. Castro, and P. Moita, B. Maggia, F. Ortega, E. Malafaia. 2025. Microwear structures and surface analysis on isolated theropod teeth from the Upper Jurassic Andrés fossil site, Pombal, Portugal. Lethaia 58(4):1–16 DOI ↗

A. Danison, M. Wedel, and D. Barta, H. Woodward, H. Flora, A. Lee, E. Snively. 2024. Chimerism in specimens referred to Saurophaganax maximus reveals a new species of Allosaurus (Dinosauria, Theropoda). Vertebrate Anatomy Morphology Palaeontology 12(11723):81–114 DOI ↗

G. C. Agyan. 2021. Taphonomy of Late Jurassic (Tithonian) Morrison Formation Apatosaurus sp. Vertebrae Found Associated with Teeth from Allosaurus sp. and Ceratosaurus sp., and Body Size Extrapolation from the Associated Theropod Teeth DOI ↗

D. J. Chure and M. A. Loewen. 2020. Cranial anatomy of Allosaurus jimmadseni, a new species from the lower part of the Morrison Formation (Upper Jurassic) of western North America. PeerJ 8:e7803:1-65 DOI ↗

J. R. Foster, D. C. Pagnac, and R. K. Hunt-Foster. 2020. An unusually diverse northern biota from the Morrison Formation (Upper Jurassic), Black Hills, Wyoming. Geology of the Intermountain West 7:29-67 DOI ↗

D. R. Richmond and N. Murphy. 2020. Stratigraphy, sedimentology, and depositional facies of the Morrison Formation 5ES Quarry of central Montana. Geological Society of America, Abstracts with Programs 52(6) DOI ↗

A. S. S. Barros. 2018. Upper Jurassic Dinosaur Bonebeds at Ten Sleep, Wyoming: Stratigraphy, Preliminary Results and Field Reports of 2016 and 2017.

J. R. Foster, J. B. McHugh, and J. E. Peterson, M. F. Leschin. 2016. Major bonebeds in mudrocks of the Morrison Formation (Upper Jurassic), northern Colorado Plateau of Utah and Colorado. Geology of the Intermountain West 3:33-66 DOI ↗

O. Gerke and O. Wings. 2016. Multivariate and cladistic analyses of isolated teeth reveal sympatry of theropod dinosaurs in the Late Jurassic of northern Germany. PLoS One 11(7):e0158334:1-52 DOI ↗

J. Bertog, D. L. Jeffery, and K. Coode, W. B. Hester, R. R. Robinson, J. Bishop. 2014. Taphonomic patterns of a dinosaur accumulation in a lacustrine delta system in the Jurassic Morrison Formation, San Rafael Swell, Utah, USA. Palaeontologia Electronica 17(3):36A:1-19 DOI ↗

S. G. Dalman. 2014. New data on small theropod dinosaurs from the Upper Jurassic Morrison Formation of Como Bluff, Wyoming, USA. Volumina Jurassica 12(2):181-196

P. C. Murphey and D. Daitch. 2014. Paleontological Technical Report: Northern Integrated Supply Project, Proposed U.S. Highway 287 Realignment Larimer County, Colorado DOI ↗

M. Hanson and P. J. Makovicky. 2013. A new specimen of Torvoaurus tanneri originally collected by Elmer Riggs. Historical Biology 26(6):775-784 DOI ↗

H. Galiano and R. Albersdörfer. 2010. A New Basal Diplodocoid Species, Amphicoelias brontodiplodocus from the Morrison Formation, Big Horn Basin, Wyoming, with Taxonomic Reevaluation of Diplodocus, Apatosaurus, Barosaurus and Other Genera. Dinosauria International (Ten Sleep, WY) Report for September 2010

J. Mathews, S. Williams, and M. Bonnan, M. Henderson. 2009. The Hanksville-Burpee Quarry: new insights into a sauropod dominated bonebed in the Morrison Formation of eastern Utah. Journal of Vertebrate Paleontology 29(3, suppl.):144A

D. J. Chure, R. Litwin, and S. T. Hasiotis, E. Evanoff, K. Carpenter. 2006. The fauna and flora of the Morrison Formation: 2006. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:233-249

S. F. Derby, B. E. Bodenbender, and T. M. Demko. 2006. An investigation of microvertebrates in the Morrison Formation near Shell, Wyoming. Geological Society of America Abstracts with Programs 38(4):67

J. R. Foster and D. J. Chure. 2006. Hindlimb allometry in the Late Jurassic theropod dinosaur Allosaurus, with comments on its abundance and distribution. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:119-122

T. Ikejiri, P. S. Watkins, and D. J. Gray. 2006. Stratigraphy, sedimentology, and taphonomy of a sauropod quarry from the upper Morrison Formation of Thermopolis, central Wyoming. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:39-46

D. S. Jennings, B. F. Platt, and S. T. Hasiotis. 2006. Distribution of vertebrate trace fossils, Upper Jurassic Morrison Formation, Bighorn Basin, Wyoming, USA: implications for differentiating paleoecological and preservational bias. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:183-192

J. I. Kirkland. 2006. Fruita Paleontological Area (Upper Jurassic, Morrison Formation), western Colorado: an example of terrestrial taphofacies analysis. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:67-95

A. L. Koch, F. Frost, and K. Trujillo. 2006. Palaeontological discoveries at Curecanti National Recreation Area and Black Canyon of the Gunnison National Park, Upper Jurassic Morrison Formation, Colorado. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:35-38

O. Mateus, A. Walen, and M. T. Antunes. 2006. The large theropod fauna of the Lourinhã Formation (Portugal) and its similarity to that of the Morrison Formation, with a description of a new species of Allosaurus. Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin 36:123-129

J. Foster. 2005. Evidence of size-classes and scavenging in the theropod Allosaurus fragilis at the Mygatt-Moore Quarry (Late Jurassic), Rabbit Valley, Colorado. Journal of Vertebrate Paleontology 25(3):59A

K. Hunter and B. Breithaupt. 2005. Rising from the dust: an Allosaurus' journey to the 21st century. Journal of Vertebrate Paleontology 25(3, suppl.):72A-73A

O. W. M. Rauhut and R. Fechner. 2005. Early development of the facial region in a non-avian theropod dinosaur. Proceedings of the Royal Society of London B 272:1179-1183 DOI ↗

B. Schumacher and G. Liggett. 2004. The dinosaurs of Picket Wire Canyonlands, a glimpse into the Morrison basin of southeastern Colorado. Journal of Vertebrate Paleontology 24(3, suppl.):110A

A. Stanton. 2004. Taphonomy of the Calico Gulch Quarry, Morrison Formation, Colorado. Journal of Vertebrate Paleontology 24(3, suppl.):117A

K. Bader. 2003. The local flora and fauna of a site in the upper Morrison Formation (Upper Jurassic) of northeastern Wyoming. Journal of Vertebrate Paleontology 23(3, suppl.):30A

J. R. Foster. 2003. Paleoecological analysis of the vertebrate fauna of the Morrison Formation (Upper Jurassic), Rocky Mountain region, U.S.A. New Mexico Museum of Natural History and Science Bulletin 23:1-95

A. B. Heckert, J. A. Spielmann, and S. G. Lucas, R. Altenberg, D. A. Russell. 2003. An Upper Jurassic theropod dinosaur from the Section 19 Mine, Morrison Formation, Grants Uranium District. In: S. G. Lucas, S. C. Semken, W. Berglof, & D. Ulmer-Scholle (eds.), Geology of the Zuni Plateau. New Mexico Geological Society, Fall Field Conference Guidebook 54:309-314 DOI ↗

M. V. Connely. 2002. Stratigraphy and Paleoecology of the Morrison Formation, Como Bluff, Wyoming

K. Carpenter and P. M. Galton. 2001. Othniel Charles Marsh and the myth of the eight-spiked Stegosaurus. The Armored Dinosaurs. Indiana University Press, Bloomington

D. J. Chure. 2001. On the type and referred material of Laelaps trihedron Cope 1877 (Dinosauria: Theropoda). D. H. Tanke and K. Carpenter (eds.), Mesozoic Vertebrate Life, Indiana University Press, Bloomington

P.-O. Mojon. 2001. Dinosauriens éocretacés des facies purbeckiens (Berriasien inférieur) du Jura méridional (S.-E. de la France) [Early Cretaceous dinosaurs from the Purbeck facies (lower Berriasian) of the southern Jura (SE France)]. Archives des Sciences Genève 54(1):1-5

B. K. Wilborn. 2001. Two New Dinosaur Bonebeds from the Late Jurassic Morrison Formation, Bighorn Basin, WY: An Analysis of the Paleontology and Stratigraphy.

D. J. Chure. 2000. Utah's first Allosaurus—Marsh's "Megalosaurus" specimen rediscovered. Brigham Young University Geology Studies 45:1-4

D. J. Chure, A. R. Fiorillo, and A. Jacobsen. 2000. Prey bone utilization by predatory dinosaurs in the Late Jurassic of North America, with comments on prey bone use by dinosaurs throughout the Mesozoic. Gaia 15:227-232

J. Ayer. 1999. The Howe Ranch Dinosaurs: 10 Years of Dinosaur Digging in Wyoming. Sauriermuseum, Aathal, Switzerland

J. H. Ostrom and J. S. McIntosh. 1999. Marsh's Dinosaurs: The Collections from Como Bluff. Yale University Press, New Haven

D. K. Smith, D. R. Richmond, and P. J. Bybee. 1999. Morphological variation in a large specimen of Allosaurus fragilis, Upper Jurassic Morrison Formation, eastern Utah. Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:135-141

C. E. Turner and F. Peterson. 1999. Biostratigraphy of dinosaurs in the Upper Jurassic Morrison Formation of the Western Interior, U.S.A. Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:77-114

K. Carpenter. 1998. Vertebrate biostratigraphy of the Morrison Formation near Cañon City, Colorado. Modern Geology 23:407-426

C. A. Bjoraker-Naus. 1997. The Warm Springs Ranch Dinosaur Locality, Thermopolis, Wyoming. Preliminary flora and fauna analysis. Journal of Vertebrate Paleontology 17(3):32A

A. R. Fiorillo and C. L. May. 1996. Preliminary report on the taphonomy and depositional setting of a new dinosaur locality in the Morrison Formation (Brushy Basin Member) of Curecanti National Recreation Area, Colorado. The Continental Jurassic. Museum of Northern Arizona Bulletin 60:555-561

J. R. Foster. 1996. Sauropod dinosaurs of the Morrison Formation (Upper Jurassic), Black Hills, South Dakota and Wyoming. Contributions to Geology, University of Wyoming 31(1):1-25

R. L. Kolb, L. E. Davis, and D. D. Gillette. 1996. The theropod dinosaur Allosaurus Marsh from the upper part of the Brushy Basin Member of the Morrison Formation (Upper Jurassic) near Green River, Utah. 1996 Field Symposium: Geology and Resources of the Paradox Basin. Utah Field Association Guidebook 25:339-349

S. G. Lucas, T. E. Williamson, and J. W. Estep, A. P. Hunt, O. J. Anderson. 1996. Jurassic fossil vertebrates from New Mexico. The Continental Jurassic. Museum of Northern Arizona Bulletin 60:235-241

D. D. Gillette. 1991. Seismosaurus halli, gen. et sp. nov., a new sauropod dinosaur from the Morrison Formation (Upper Jurassic/Lower Cretaceous) of New Mexico, USA. Journal of Vertebrate Paleontology 11(4):417-433 DOI ↗

J. Howard. 1991. The Mill Canyon Dinosaur Trail. Guidebook for Dinosaur Quarries and Tracksites Tour, Western Colorado and Eastern Utah

J. S. McIntosh. 1990. The second Jurassic dinosaur rush. Earth Sciences History 9(1):22-27 DOI ↗

D. J. Chure and G. F. Engelmann. 1989. The fauna of the Morrison Formation in Dinosaur National Monument. In J. J. Flynn (ed.), Mesozoic/Cenozoic Vertebrate Paleontology: Classic Localities, Contemporary Approaches: Field Trip Guide Book T322. American Geophysical Union, Washington, DC DOI ↗

R. T. Bird. 1985. Bones for Barnum Brown DOI ↗

S. G. Lucas, K. K. Kietzke, and A. P. Hunt. 1985. The Jurassic system in east-central New Mexico. New Mexico Geological Society, 36th Annual Fall Field Conference Guidebook, Santa Rosa, Tucumcari Region DOI ↗

J. S. McIntosh. 1981. Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History. Bulletin of Carnegie Museum of Natural History 18:1-67 DOI ↗

W. L. Stokes. 1964. Fossilized stomach contents of a sauropod dinosaur. Science 143:576-577 DOI ↗

C. T. Smith. 1961. Triassic and Jurassic rocks of the Albuquerque area. New Mexico Geological Society 12th Annual Fall Field Conference, Albuquerque Country. New Mexico Geological Society Guidebook 12:121-128 DOI ↗

W. L. Stokes. 1961. Dinosaur Quarry near Cleveland, Utah. Utah Academy Proceedings 38:132-133

G. E. Ray. 1941. Big for his day. Natural History 41:36-39

E. L. Holt. 1940. The dinosaurs of the Grand River Valley. Journal of the Colorado-Wyoming Academy of Science 2(6):28-29

H. E. Gregory. 1936. The San Juan country. A geographic and geologic reconnassance of southeastern Utah. United States Geological Survey Professional Paper 188:v-123

C. W. Gilmore. 1920. Osteology of the carnivorous Dinosauria in the United States National Museum, with special reference to the genera Antrodemus (Allosaurus) and Ceratosaurus. Bulletin of the United States National Museum 110:1-154 DOI ↗

H. E. Gregory. 1917. Geology of the Navajo Country. A reconnaissance of part of Arizona, New Mexico, and Utah. United States Geological Survey Professional Paper 93:1-161 DOI ↗

W. D. Matthew. 1915. Dinosaurs, with Special Reference to the American Museum Collections. American Museum of Natural History, New York

C. W. Gilmore. 1914. Osteology of the armored Dinosauria in the United States National Museum, with special reference to the genus Stegosaurus. United States National Museum Bulletin 89:1-136 DOI ↗

H. F. Osborn. 1903. The skull of Creosaurus. Bulletin of the American Museum of Natural History 19(31):697-701

S. W. Williston. 1901. The dinosaurian genus Creosaurus, Marsh. American Journal of Science, series 4 11(11):111-114 DOI ↗

O. C. Marsh. 1896. The dinosaurs of North America. United States Geological Survey, 16th Annual Report, 1894-95 55:133-244 DOI ↗

O. C. Marsh. 1884. Principal characters of American Jurassic dinosaurs. Part VIII. The order Theropoda. The American Journal of Science, series 3 27:329-340 DOI ↗

O. C. Marsh. 1879. Notice of new Jurassic reptiles. The American Journal of Science and Arts, series 3 18:501–505 DOI ↗

E. D. Cope. 1878. A new opisthocoelous dinosaur. American Naturalist 12(6):406

O. C. Marsh. 1878. Notice of new dinosaurian reptiles. American Journal of Science and Arts 15:241-244 DOI ↗

E. D. Cope. 1877. On a carnivorous dinosaurian from the Dakota Beds of Colorado. Bulletin of the United States Geological and Geographical Survey 3(4):805-806

J. Leidy. 1870. [Remarks on Poikilopleuron valens, Clidastes intermedius, Macrosaurus proriger, Baptemys wyomingensis, and Emys stevensonianus]. Proceedings of the Academy of Natural Sciences of Philadelphia 22(1):3-5