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Welcome to our EDMONTOSAURUS entry...
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EDMONTOSAURUS

a plant-eating saurolophine hadrosaurid dinosaur from the Late Cretaceous of Canada.
edmontosaurus.png
Pronunciation: ed-MON-tuh-SOR-us
Meaning: Edmonton lizard
Author/s: Lambe (1917)
Synonyms: See below
First Discovery: Alberta, Canada
Discovery Chart Position: #120

Edmontosaurus regalis

(Regal Edmonton Lizard)Etymology
Edmontosaurus is derived from "Edmonton", the Late Cretaceous Formation (now known as the Horseshoe Canyon Formation) in Alberta, Canada, where the type specimen was found, and the Greek "sauros" (lizard).
The species epithet, regalis, means "regal" in Latin.
Synonyms
Claosaurus annectens (Marsh, 1892)
Anatosaurus annectens (Lull and Wright, 1942)
Anatotitan copei (Chapman and Brett-Surman, 1990)
Ugrunaaluk kuukpikensis? (Mori et al., 2015)
Discovery
The first two specimens of Edmontosaurus were discovered in the Horseshoe Canyon Formation (previously known as the Edmonton Formation) along the Red Deer River of southern Alberta, Canada.
The holotype (NMC 2288) is a skull and partial skeleton discovered by Levi Sternberg in 1912. The paratype (NMC 2289) is a skull and partial skeleton discovered by George F. Sternberg in 1916.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Campanian
Age range: 80-73 mya
Stats:
Est. max. length: 12 meters
Est. max. hip height: ?
Est. max. weight: 6 tons
Diet: Herbivore
References
• Marsh OC (1892) "Restorations of Claosaurus and Ceratosaurus". American Journal of Science. 44(262): 343-349. DOI: 10.2475/ajs.s3-44.262.343
• Hatcher JB (1902) "The genera and species of the Trachodontidae (Hadrosauridae, Claosauridae) Marsh". Annals of the Carnegie Museum, 1(14): 377-386. DOI: 10.5962/p.331063.
• Gilmore CW (1915) "On the genus Trachodon". Science, 41(1061): 658–660. DOI: 10.1126/science.41.1061.658.
• Lambe LM (1917) "A new genus and species of crestless hadrosaur from the Edmonton Formation of Alberta". The Ottawa Naturalist, 31(7): 65-73.
• Lambe LM (1920) "The hadrosaur Edmontosaurus from the Upper Cretaceous of Alberta". Canada Department of Mines/Geological Survey. Memoir 120. No. 102, Geological Series. P: 1-79.
• Lull RS and Wright NE (1942) "Hadrosaurian Dinosaurs of North America". Geological Society of America. Special papers. Volume 40.
• Brett-Surman MK (1975) "The appendicular anatomy of hadrosaurian dinosaurs". M.A. thesis. Berkeley: University of California.
• Brett-Surman MK (1979) "Phylogeny and paleobiogeography of hadrosaurian dinosaurs". Nature, 277(5697): 560–562. DOI: 10.1038/277560a0.
• Brett-Surman MK (1989) "A revision of the Hadrosauridae (Reptilia: Ornithischia) and their evolution during the Campanian and Maastrichtian". PhD dissertation. Washington D.C.: George Washington University.
• Brett-Surman MK (1997) "Ornithopods". In Farlow and Brett-Surman (eds.) "The Complete Dinosaur".
• Glut DF (1997) "Edmontosaurus". In "Dinosaurs: The Encyclopedia".
• Creisler BS (2007) "Deciphering duckbills: a history in nomenclature". In Carpenter (ed.) "Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs".
• Horner JR, Weishampel DB and Forster CA (2004) "Hadrosauridae". In Weishampel, Dodson and Osmolska (eds.) "The Dinosauria: Second Edition".
• Campione NE and Evans DC (2011) "Cranial Growth and Variation in Edmontosaurs (Dinosauria: Hadrosauridae): Implications for Latest Cretaceous Megaherbivore Diversity in North America". PLOS ONE, 6(9): e25186. DOI: 10.1371/journal.pone.0025186.
• Bell PR, Fanti F, Currie PJ and Arbour VM (2013) "A Mummified Duck-Billed Dinosaur with a Soft-Tissue Cock's Comb". Current Biology, 24(1): 70-75. DOI: 10.1016/j.cub.2013.11.008.
• Bakker RT (1986) "The case of the duckbill's hand". In "The Dinosaur Heresies: New Theories Unlocking the Mystery of the Dinosaurs and their Extinction".
• Xing H, Mallon JC and Currie ML (2017) "Supplementary cranial description of the types of Edmontosaurus regalis (Ornithischia: Hadrosauridae), with comments on the phylogenetics and biogeography of Hadrosaurinae". PLOS ONE, 12(4): e0175253. DOI: 10.1371/journal.pone.0175253
• Siviero BCT, Rega E, Hayes WK, Cooper AM, Brand LR and Chadwick AV (2020) "Skeletal Trauma with Implications for Intratail Mobility in Edmontosaurus Annectens from a Monodominant Bonebed, Lance Formation (Maastrichtian), Wyoming USA". PALAIOS, 35(4): 201-214. DOI: 10.2110/palo.2019.079.
• Wosik M and Evans DC (2022) "Osteohistological and taphonomic life-history assessment of Edmontosaurus annectens (Ornithischia: Hadrosauridae) from the Late Cretaceous (Maastrichtian) Ruth Mason dinosaur quarry, South Dakota, United States, with implication for ontogenetic segregation between juvenile and adult hadrosaurids". Journal of Anatomy, 241(2): 272-296. DOI: 10.1111/joa.13679. DOI: 10.1111/joa.13679
• Sereno PC, Saitta ET, Vidal D, Myhrvold N, Real MC, Baumgart SL, Bop LL, Keillor TM, Eriksen M and Derstler K  (2025) "Duck-billed dinosaur fleshy midline and hooves reveal terrestrial clay-template “mummification”". Science. DOI: 10.1126/science.adw3536.
• Sharpe HS, Bell PR, Baylatry I, Sissons R and Sullivan C (2025) "Re-evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity". The Anatomical Record (advance online publication). DOI: 10.1002/ar.70098.
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To cite this page:
Atkinson, L. "EDMONTOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 05th Mar 2026.
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