Other US Theropods

Other US Theropods

The category contains teeth from other US theropod dinosaur species including Avisaurus, Paronychodon, Richardoestesia, Sauronitholestes, and Troodon

AVisaurus - is an extinct primitive toothed bird from the Enantiornithine bird family. A genus of Enantiornithine bird from the Late Cretaceous of North America with two known species. They looked very much like birds except for the claws on the end of their arms and jaws with teeth!

Paronychodon - was a theropod dinosaur genus, and thought to be in the Troodonidae family.  This a late Cretaceous dinosaur that lived from the Campanian to Maastrichian (70 to 66 MYA). So, they were present in the Judith River and Hell Creek Fm. Teeth Have been found, but not much else to describe this theropod. Note - Paronychodon teeth are typically found with Richardoestesia teeth and they may be related much like the recent Sauronitholestes & Zapsalis teeth description (where  Zapsalis in the Judith River Fm. is now described as the premaxillary tooth).

Richardoestesia - was a theropod dinosaur genus, and thought to be in the Troodonidae family.  This a late Cretaceous dinosaur that lived from the Campanian to Maastrichian (70 to 66 MYA). So, they were present in the Judith River and Hell Creek Fm. Teeth have been found, but not much else to describe this theropod. Note - Richardoestesia teeth are typically found with Paronychodon teeth and they may be related much like the recent Sauronitholestes & Zapsalis teeth description (where Zapsalis in the Judith River Fm. is now described as the Sauronitholestes premaxillary tooth).

TroodonitdsTroodontids are a smaller, bird-like dinosaur that lived in western N. America during the late Cretaceous Period. They are part of the part of the Deinonychosauria clade. There was one named No. American species from the Judith River Fm. of Montana - Troodon formosus. Recently the North American Troodontid has been lump into two new genera - Stenonychosaurus and Latenivenatrix mcmasterae(van der Reest & Currie, 2017). Troodontids are know for a large brain, large eyes, and a very unique shaped tooth. The Hell Creek Fm. Troodontid has not been described, but it shares the same very unique tooth as all Troodontids do.

 


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  1. Paronychodon lacustris
    $95.00

    A Top Quality Paronychodon lacustris tooth from Montana. A theropod from the Troodonidae family. These teeth are recurved, flat, with strong longitudinal grooves running the length of the crown. They are non-serrate and may be related to Richardoestesia (see below). No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DB08       Size: 3/8"+

    Note - Adding 10 new Paronychodon teeth in August 2022      Link to Paronychodon catalog.

     

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  2. Richardoestesia isosceles
    $65.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see below). Note - Typical serrrated edge shown. Wear facet on tip. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF06       Size: 1/2

    Note - Adding 7 new Richardoestesia teeth in August 2022      Link to Richardoestesia catalog.

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  3. Richardoestesia isosceles
    $65.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see below). Note - Typical serrrated edge shown. Wear facet on tip. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF04       Size: 9/16"

    Note - Adding 7 new Richardoestesia teeth in August 2022      Link to Richardoestesia catalog.

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  4. Richardoestesia isosceles
    $65.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see beow). Note - Typical serrrated edge shown. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF07       Size: 1/2"

    Note - Adding 10 new Richardoestesia teeth in January 2021      Link to Richardoestesia catalog.

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  5. Richardoestesia isosceles
    $60.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see beow). No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF08       Size: 7/16"

    Note - Adding 10 new Richardoestesia teeth in January 2021      Link to Richardoestesia catalog.

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  6. Richardoestesia isosceles
    $45.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see below). Note - Typical serrrated edge shown. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF10       Size: 3/8"

    Note - Adding 7 new Richardoestesia teeth in August 2022      Link to Richardoestesia catalog.

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  7. Richardoestesia isosceles
    $45.00

    A Top Quality Richardoestesia isosceles tooth from Montana. A theropod from the Troodonidae family. These teeth are straight, flat, and possess ultra-fine serrations that run the length of the crown and may be related to Paronychodon (see below). Note - Typical serrrated edge shown. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. 

    DF09       Size: 3/8"

    Note - Adding 7 new Richardoestesia teeth in August 2022      Link to Richardoestesia catalog.

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  8. Troodon sp. (Hell Creek Fm)
    $0.00

    A RARE, Troodontid tooth from the Hell Creek Fm. of western North America. Troodontid teeth are known for their very unique shaped teeth with unusually large distal serrations. The enamel is good with a good brown color.  Good large posterior and no anterior serrations. Please note that the Troodon teeth may or may not have anterior (mesial) serrations. One crack. No repair. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed. This is your chance to own a rare, quality Troodontid tooth.  Note - A gem jar will be included as photographed.

    DO06       SIZE: ~3/8"

    Note - Adding 6 new Troodontid teeth in July 2021     Link to Troodon catalog.

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  9. Troodon sp. (Hell Creek Fm)
    $0.00

    A RARE, Troodontid tooth from the Hell Creek Fm. of western North America. Troodontid teeth are known for their very unique shaped teeth with unusually large distal serrations. The enamel is excellent with a good brown color.  Excellent large posterior and basal anterior serrations. Please note that the Troodon teeth may or may not have anterior (mesial) serrations. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. This is your chance to own a rare, quality Troodontid tooth.  Note - A gem jar will be included as photographed.

    DO05       SIZE: 3/8"

    Note - Adding 6 new Troodontid teeth in July 2021     Link to Troodon catalog.

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  10. Troodon sp. (Hell Creek Fm)
    $0.00

    A RARE, Troodontid tooth from the Hell Creek Fm. of western North America. Troodontid teeth are known for their very unique shaped teeth with unusually large distal serrations. The enamel is excellent with a good brown color.  Excellent large posterior and no anterior serrations. Please note that the Troodon teeth may or may not have anterior (mesial) serrations. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. This is your chance to own a rare, quality Troodontid tooth.  Note - A gem jar will be included as photographed. Perfect tooth.

    DO04       SIZE: 3/8"+

    Note - Adding 6 new Troodontid teeth in July 2021     Link to Troodon catalog.

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  11. Troodon sp. (Hell Creek Fm)
    $0.00

    A RARE, Troodontid tooth from the Hell Creek Fm. of western North America. Troodontid teeth are known for their very unique shaped teeth with unusually large distal serrations. The enamel is excellent with a good brown color.  Excellent large posterior and no anterior serrations. Please note that the Troodon teeth may or may not have anterior (mesial) serrations. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. Authenticity guaranteed. This is your chance to own a rare, quality Troodontid tooth.  Note - A gem jar will be included as photographed. 

    DO02       SIZE: 3/8"

    Note - Adding 6 new Troodontid teeth in July 2021     Link to Troodon catalog.

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  12. Troodon sp. (Hell Creek Fm)
    $0.00

    A RARE, Troodontid tooth from the Hell Creek Fm. of western North America. A July Fossil for the Month. Troodontid teeth are known for their very unique shaped teeth with unusually large distal serrations. The enamel is excellent with a good brown color.  Excellent large posterior and basal anterior serrations. Please note that the Troodon teeth may or may not have anterior (mesial) serrations. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. Authenticity guaranteed. This is your chance to own a rare, quality Troodontid tooth.  Note - A gem jar will be included as photographed. Perfect tooth.

    DO01       SIZE: 7/16"

    Note - Adding 6 new Troodontid teeth in July 2021     Link to Troodon catalog.

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