Skeletal mount of Edmontosaurus annectens, copyright Andytang20.

Belongs within: Hadrosauridae.

The Hadrosaurinae are a lineage of hadrosaurid dinosaurs that were mostly crestless, or possessed a solid crest formed from an extension of the nasal bones. The clade as given below is supported by the presence of a caudal margin on the circumnarial fossa (Horner et al. 2004). Members of the genus Edmontosaurus include some of the largest and best known hadrosaurids, reaching lengths of around twelve metres or more.

    |--Lophorhothon Langston 1960HWF04
    |    `--L. atopus Langston 1960HWF04 [=Saurolophus atopusP10]
    `--+--+--Naashoibitosaurus Hunt & Lucas 1993HWF04
       |  |    `--N. ostromi Hunt & Lucas 1993HWF04
       |  |--Kritosaurus Brown 1910HWF04, D07
       |  |    |--K. australis Bonaparte, Franchi et al. 1984HWF04
       |  |    |--K. monumentensis [=Gryposaurus monumentensis]P10
       |  |    `--K. navajovius Brown 1910 (n. d.)HWF04
       |  `--Saurolophus Brown 1912HWF04
       |       |--S. angustirostris Rozhdestvensky 1952HWF04
       |       |--S. kryschtofovici Riabinin 1930 (n. d.)HWF04
       |       `--S. osborni Brown 1912HWF04
       `--+--Prosaurolophus Brown 1916HWF04
          |    |--P. blackfeetensis Horner 1992HWF04 [=Saurolophus blackfeetensisP10]
          |    `--P. maximus Brown 1916HWF04 [=Saurolophus maximusP10]
          `--+--Gryposaurus Lambe 1914HWF04
             |    |--G. incurvimanus (Parks 1920) [=Kritosaurus incurvimanus]HWF04
             |    |--G. latidens Horner 1992HWF04 [=Kritosaurus latidensP10]
             |    `--G. notabilis Lambe 1914HWF04 [=Kritosaurus notabilisD07]
             `--+--Edmontosaurus Lambe 1920 (see below for synonymy)HWF04
                |    |--E. annectens (Marsh 1892)HWF04 (see below for synonymy)
                |    |--E. regalis Lambe 1917 [incl. Trachodon atavus Cope 1871, Agathaumas milo Cope 1874]HWF04
                |    `--E. saskatchewanensis (Sternberg 1926) [=Thespesius saskatchewanensis]HWF04
                `--+--Brachylophosaurus Sternberg 1953HWF04
                   |    `--B. canadensis Sternberg 1953 [incl. B. goodwini Horner 1988]HWF04
                   `--Maiasaura Horner & Makela 1979HWF04
                        `--M. peeblesorum Horner & Makela 1979HWF04 [=Brachylophosaurus peeblesorumP10]
Hadrosaurinae incertae sedis:
  Anasazisaurus Hunt & Lucas 1993HWF04
    `--A. horneri Hunt & Lucas 1993HWF04 [=Kritosaurus horneriP10]
  Aralosaurus Rozhdestvensky 1968HWF04
    `--A. tuberiferus Rozhdestvensky 1968HWF04 [=Kritosaurus tuberiferusP10]
  Shantungosaurus Hu 1973HWF04
    `--S. giganteus Hu 1973HWF04
  Kerberosaurus Bolotsky & Godefroit 2004D07
    `--K. manakiniD07
  Hadrosaurus Leidy 1858HWF04
    |--H. breviceps Marsh 1889 (n. d.)HWF04
    |--H. cavatus Cope 1871 (n. d.)HWF04
    |--H. foulkii Leidy 1858 [incl. Ornithotarsus immanis Cope 1869]HWF04
    |--H. minor Marsh 1870 (n. d.)HWF04
    `--H. paucidens Marsh 1889 (n. d.)HWF04
  Arstanosaurus akkurganensis Suslov & Shilin 1982 (n. d.)V-RR93, HWF04
  Wulagasaurus dongiP10

Edmontosaurus Lambe 1920 [incl. Anatosaurus Lull & Wright 1942, Anatotitan Brett-Surman in Chapman & Brett-Surman 1990]HWF04

Edmontosaurus annectens (Marsh 1892)HWF04 [=Claosaurus annectensHWF04, Anatosaurus annectensP10; incl. Anatosaurus copei Lull & Wright 1942HWF04, Anatotitan copeiD07, Edmontosaurus copeiP10, Thespesius edmontonensis Gilmore 1924HWF04, E. edmontoniP10, Trachodon longiceps Marsh 1890HWF04, Anatotitan longicepsD07]

*Type species of generic name indicated


[D07] Dixon, D. 2007. The Complete Illustrated Encyclopedia of Dinosaurs & Prehistoric Creatures. Hermes House: London.

[HWF04] Horner, J. R., D. B. Weishampel & C. A. Forster. 2004. Hadrosauridae. In: Weishampel, D. B., P. Dodson & H. Osmólska (eds) The Dinosauria 2nd ed. pp. 438–463. University of California Press: Berkeley.

[P10] Paul, G. S. 2010. Dinosaurs: A Field Guide. A & C Black.

[V-RR93] Vickers-Rich, P., & T. H. Rich. 1993. The ICI Australia Catalogue of the Great Russian Dinosaurs Exhibition 1993–1995. Monash University.

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