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  • Hadrosaur Humerus




    Duckbill Dinosaur

    Kingdom: Animalia
    Phylum: Chordata
    Class: Reptilia
    Order: Ornithischia
    Family: Hadrosauridae
    Genus: cf. Hypacrosaurus
    Species: cf. Hypacrosaurus stebingeri
    Author Citation Horner & Currie, 1994

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Sub Period: None
    Epoch: Late
    International Age: Campanian


    Acquired by: Purchase/Trade


    Ravalli County
    United States


    The left humerus of a juvenile hadrosaur. Found near Hamilton. The closest formation is Two Medicine formation. The deltopectoral crest seems fairly robust for such a young animal so I'm leaning towards this being Lambeosaurine instead of Saurolophine, which would make it most likely Hypacrosaurus. The shape also fits quite well with a juvenile Hypacrosaurus


    I have restored some small areas where there were large holes. But I have left the largest area of damage due to it being a little unclear as to how robust or slender that area would have been.

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