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Epanterias

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Epanterias
Temporal range:Late Jurassic,146.8Ma
Illustration of the holotype
Scientific classificationEdit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Family: Allosauridae
Genus: Epanterias
Cope,1878
Species:
E. amplexus
Binomial name
Epanterias amplexus
Cope, 1878
Synonyms

Epanteriasis adubiousgenusoftheropoddinosaurfrom theTithonianageUpper JurassicupperMorrison Formationof Garden Park,Colorado.It was described byEdward Drinker Copein 1878. Thetype speciesisEpanterias amplexus.[1]This genus isbased onwhat is nowAMNH5767, parts of threevertebrae,acoracoid,and ametatarsal.[2]Although Cope thought it was asauropod,[1]it was later shown to be a theropod.[2]Gregory S. Paulreassessed the material as pertaining to a largespeciesofAllosaurusin 1988 (which he classified asAllosaurus amplexus).[3]Other authors have gone further and consideredE. amplexusas simply a large individual ofAllosaurus fragilis.[4]In 2010, Gregory S. Paul andKenneth Carpenternoted that theE. amplexusspecimen comes from higher in the Morrison Formation than the type specimen ofAllosaurus fragilis,and is therefore "probably a different taxon". They also considered its holotype specimen not diagnostic and classified it as anomen dubium.[5]

Etymology

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Thegeneric epithettranslates to "buttressed" in Greek, in reference to the vertebrae. The wordamplexusrefers to thecopulatoryposition ofamphibiansin which males clasp their mates. Therefore, thespecific epithetmeans "clasping buttressed vertebrae" inLatin.

References

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  1. ^abCope, Edward Drinker (1878). "A new opisthocoelous dinosaur".American Naturalist.12(6): 406–408.doi:10.1086/272127.
  2. ^abOsborn, Henry Fairfield;Mook, Charles C. (1921). "Camarasaurus,Amphicoelias,and other sauropods of Cope ".Memoirs of the American Museum of Natural History.New Series.3(3): 247–387.
  3. ^Paul, Gregory S. (1988)."GenusAllosaurus".Predatory Dinosaurs of the World.New York: Simon & Schuster. pp.307–313.ISBN978-0-671-61946-6.
  4. ^Holtz, Thomas R. Jr.;Molnar, Ralph E.; Currie, Philip J. (2004). Weishampel, David B.; Dodson, Peter; Osmólska Halszka (eds.).The Dinosauria(2nd ed.). Berkeley: University of California Press. pp.71–110.ISBN978-0-520-24209-8.
  5. ^Paul, G.S. and Carpenter, K. (2010). "Case 3506:AllosaurusMarsh, 1877 (Dinosauria, Theropoda): proposed conservation of usage by designation of a neotype for its type speciesAllosaurus fragilisMarsh, 1877. "Bulletin of Zoological Nomenclature,67(1): 53-56.[1]
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