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gturner333

ankylosaurus tooth?

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gturner333

I found this in some Lance formation matrix. Might it be an ankylosaurus tooth? If not, what do you think it may be? Thanks for any help. The hash marks are 1mm.

ankylesaiur bot.jpg

ankylesaiur edge.jpg

ankylesaiur side 1.jpg

ankylesaiur side 2.jpg

ankylesaiur top.jpg

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Troodon

I believe this is a Thescelosaurus tooth.

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Familyroadtrip

I agree with @Troodon

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gturner333

Thanks for the ID. 

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pachy-pleuro-whatnot-odon

@Troodon and @Familyroadtrip, I'm by far not versed in dinosaur teeth, but I'd have said ankylosaur too, based on the overall leaf-shape of the tooth and the cusps along it's ridge. What's the difference?

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Troodon

 

38 minutes ago, pachy-pleuro-whatnot-odon said:

@Troodon and @Familyroadtrip, I'm by far not versed in dinosaur teeth, but I'd have said ankylosaur too, based on the overall leaf-shape of the tooth and the cusps along it's ridge. What's the difference?

Hell Creek /Lance taxons are identical

 

Here is an Ankylosaurus tooth.  Strong center ridge and bulbous shelf at base.  

 

post-10935-0-80040800-1440178583.thumb.jpg.3117f362c5a76e21a8a027fcf1ccd85c.jpg.a2d3f7eb09e82612d7d23c87d63ad74b.jpg

 

A Nodosaurid like Denversaurus has more of a pocket as well as a shelf

post-10935-0-51559100-1440179641.thumb.jpg.1f553825f022cb47b59a22c2cf61c851.jpg.8e003a302e175a17368e7981f70df1b6.jpg

 

Thescelosaurus teeth vary quite a bit in the jaw but are more leaf shaped with fine ridges running vertically across the face and some have a slightly larger ridge in the center

post-10935-0-88056700-1459189152.jpg.075c3006af1ff4d092fd37b7fbdcc7ec.jpg

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pachy-pleuro-whatnot-odon

Thanks for the excellent explanation, @Troodon! Very interesting to see that such minute differences can be so telling...!

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