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  • Avisaurus Tooth


    Images:

    ThePhysicist

    Taxonomy

    Avisaurus

    Kingdom: Animalia
    Phylum: Chordata
    Class: Aves
    Order: Avetheropoda
    Family: Avisauridae
    Genus: Avisaurus
    Species: Avisaurus archibaldi
    Author Citation Brett-Surman & Paul, 1985

    Geological Time Scale

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

    Stratigraphy

    Hell Creek Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Height: 4 mm
    Thickness: 1 mm

    Location

    Garfield County
    Montana
    United States

    Comments

    Identification:

    This tooth is triangular and thin, with significant basal constriction, a hallmark of bird teeth.

    Notes:

    This tooth has a feeding wear facet on the labial side, suggesting that it's from the left "dentary."

    Citation:

    BRETT-SURMAN, MICHAEL K. & PAUL, GREGORY S., 1985, A new family of bird-like dinosaurs linking Laurasia and Gondwanaland, Journal of Vertebrate Paleontology, Volume 5, Number 2, June, Pages 133-138, https://www.jstor.org/stable/i405987




    User Feedback


    Very nice specimen! 4mm is quite large.

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    ThePhysicist

    Posted

    On 4/4/2021 at 10:44 AM, Auspex said:

    Very nice specimen! 4mm is quite large.

    Thank you! It's quite a beast of a tooth I suppose B).

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    Gorgeous tooth - love it.

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    Beautiful crown with a nice root element 

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    ThePhysicist

    Posted

    On 4/6/2021 at 11:17 AM, oilshale said:

    Gorgeous tooth - love it.

     

    On 4/6/2021 at 4:39 PM, Troodon said:

    Beautiful crown with a nice root element 

    Thank you! 

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    Super rare tooth congratulations on your find.

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    ThePhysicist

    Posted

    On 4/9/2021 at 2:43 PM, Haravex said:

    Super rare tooth congratulations on your find.

    Thanks! They're not very common in my mailbox :P.

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    ThePhysicist

    Posted

    Based on the findings of a recent publication, this is likely to be a young crocodilian tooth rather than that of an Enantiornithine: https://doi.org/10.1371/journal.pone.0283581

    This fossil may need to be removed from collections in light of this.

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