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  • Dromaeosaurid Tooth

    Images:

    ThePhysicist

    By ThePhysicist

    Taxonomy

    Dromaeosaur

    Kingdom: Animalia
    Phylum: Chordata
    Class: Reptilia
    Order: Avetheropoda
    Family: Dromaeosauridae
    Genus: Indet.
    Species: Indet.
    Author Citation Matthew & Brown, 1922

    Geological Time Scale

    Eon: Phanerozoic
    Era: Mesozoic
    Period: Cretaceous
    Sub Period: None
    Epoch: Late

    Stratigraphy

    Hell Creek Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 6 mm
    Width: 3 mm
    Height: 10.5 mm

    Location

    Carter County
    Montana
    United States

    Comments

    Identification:

    This is a typical Dromaeosaurid tooth, with the serrations being differently-sized on each carina; the denticles are much smaller on the mesial carina compared to the distal carina. There's also slight recurvature, which is common in Dromaeosaurs. There are no other features present that allow for identification beyond Family. Described Dromaeosaurs in the Hell Creek Formation include Acheroraptor temertyorum and Dakotaraptor steini. Because both of their known dentitions are incomplete, this tooth may belong to either, or another undescribed Dromaeosaur.

    Identification further discussed here.

    Notes:

    CH: ~ 10.5 mm
    CBL: ~ 6 mm
    CBW: 3 mm
    Mesial denticle density: 8 / mm
    Distal denticle density: 4.5 / mm

    There is some minimal feeding wear on the tip, but this tooth is otherwise flawless.

    Go to fossils Dinosaurs

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