Other US Theropods / Troodontids

Other US Theropods / Troodontids

The category contains teeth from other US theropod dinosaur species including Avisaurus, Paronychodon, Pectinodon, 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).

Pectinodon -  Pectinodon is an extinct genus of troodontid theropod dinosaur from the Late Cretaceous period (66 mya). It currently contains a single valid species, Pectinodon bakkeri. This was a small theropod with teeth similar to, but smaller than Troodon. There are no serrations on the anterior side of the 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).

Troodon - Troodon and other Troodontids 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. Troodon sp. (Hell Creek Fm)
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    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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  2. Troodon sp. (Hell Creek Fm)
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    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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  3. Troodon sp. (Hell Creek Fm)
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    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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  4. Troodon sp. (Hell Creek Fm)
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    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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  5. Troodon sp. (Hell Creek Fm)
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    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 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., 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. Perfect tooth.

    DO01       SIZE: 3/8"+

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

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  6. Avisaurus archibaldi
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    A rare, Top Quality Avisaurus archibaldi tooth from the Hell Creek Fm. of Montana. A extinct primitive toothed bird from the Enantiornithine bird family. These teeth are triangular and thin, and the crown is non-serrate and may have longitudinal ridges. The root has to has a strong vertical notch. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed. 

    DM09       Size: 3/16"

    Note - Adding 10 new Avisaurus teeth in July 2021      Link to Avisaurus catalog.

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  7. Avisaurus archibaldi
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    A rare, Top Quality Avisaurus archibaldi tooth from the Hell Creek Fm. of Montana. A extinct primitive toothed bird from the Enantiornithine bird family. These teeth are triangular and thin, and the crown is non-serrate and may have longitudinal ridges. The root has to has a strong vertical notch. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed. 

    DM07       Size: 3/16"+  On HOLD

    Note - Adding 10 new Avisaurus teeth in July 2021      Link to Avisaurus catalog.

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  8. Avisaurus archibaldi
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    A rare, Top Quality Avisaurus archibaldi tooth from the Hell Creek Fm. of Montana. A extinct primitive toothed bird from the Enantiornithine bird family. These teeth are triangular and thin, and the crown is non-serrate and may have longitudinal ridges. The root has to has a strong vertical notch. No cracks. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. Authenticity guaranteed. 

    DM06       Size: 3/16"+

    Note - Adding 10 new Avisaurus teeth in July 2021      Link to Avisaurus catalog.

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  9. Torvosaurus
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    A Top Quality juvenile, Torvosaurus tanneri tooth. This Torvosaurus crown measures 11/16". The enamel is high quality. Great rich dark brown color. Fair posterior serrations and anterior serrations are worn. Note - the anterior carina end about 1/3 of the way down from the tip. Good overall condition and serrations. No repair or restoration. Torvosaurus was a large predator during the late Jurassic with large teeth designed to slash predators. Legally collected on private land in the Morrison Fm., Salt & Pepper Quarry, Moffat Co., Colorado. Authenticity guaranteed.  Note - a Gem case display is included. A difficult species to find.

    DL12         SIZE: 11/16"   

    Note - Adding 12 Jurassic theropod teeth in May 2022    Link to Allosaurus teeth

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  10. Paronychodon lacustris
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    An EXTRA LARGE, Top Quality Paronychodon lacustris tooth from Montana. A theropod from the Troodonidae family.  An August Fossil of the Month. 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., Garfield Co., Montana. Authenticity guaranteed. Maximum size. Perfect tooth. 

    DB01       Size: 11/16"

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

     

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  11. Troodon metatarsal (Hell Creek Fm)
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    An ultra RARE, LARGE Troodon metatarsal from the Hell Creek Fm. of western North America. This is metatarsal IV. The bone quality is excellent with a great brown color. Minor erosion on the top end. 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 an ultra rare, quality Troodon metatarsal.   

    DO21       SIZE: 9-3/8" length  (end width 1-3/8" & 1-1/8")

    Note - Adding 10 new Troodontid teeth in March 2023.     Link to Troodon catalog.

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