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  1. Edmontonia
    EdmontoniaGenus of dinosaurs
    OverviewExtinctionSizeFossilsFacts
  2. EtymologyAfter the Horseshoe Canyon (Edmonton) Formation
    SpeciesE. rugosidensE. longiceps
    SynonymsChassternbergiaE. schlessmani
    LocationNorth America
    Description

    Edmontonia was bulky, broad and tank-like. Its length has been estimated at 6.6 m (22 ft). In 2010, Gregory S. Paul considered both main Edmontonia species, E. longiceps and E. rugosidens, to be equally long at six metres an… See more

    Discovery and species

    In 1915, the American Museum of Natural History obtained the nearly complete, articulated front half of an armoured dinosaur, found the same year by Barnum Brown in Alberta, Canada. In 1922, William Diller Matth… See more

    Phylogeny

    C.M. Sternberg originally did not provide a classification of Edmontonia. In 1930, L.S. Russell placed the genus in the Nodosauridae, which has been confirmed by subsequent analyses. Edmontonia was generally s… See more

    Paleobiology

    The large spikes were probably used between males in contests of strength to defend territory or gain mates. The spikes would also have been useful for intimidating predators or rival males, passive protection, or for activ… See more

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