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Juvenile tyrannosaurid premax ID


DatFossilBoy

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Hello all!

I have acquired a very nice juvenile tyrannosaurid tooth from the Judith River Formation.

I am fully aware that teeth from there are very difficult to be assigned a specie, but I was wondering if it could be narrowed down a little.

Last time @Troodon was able to give me awesome info and help.

The tooth is a premax tooth and is 1,7cm in length.

I have a serration count for both distal and mesial sides:

hard to tell for sure but it looks like 3/mm for the distal

                                                       4/mm for the mesial

Thank you very much for all imput and info :) 

Kind regards,

Thomas 

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955A4162-B6C7-4BCB-B647-C5875CDE760D.jpeg

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Where was this tooth found, state and county needed.

Photo of base please and mesial side.

Dont see a premaxillary tooth

 

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I don't see a premax tooth either.  He did sat Judith River Fm.  That is fairly limited geographically.  Northern MT and southern ALB.

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9 hours ago, jpc said:

He did sat Judith River Fm

Yep but unfortunately I dont trust this without a specific locality, county & state.  Have seen too many issues.  Preservation looks spot on.

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21 hours ago, Troodon said:

Where was this tooth found, state and county needed.

Photo of base please and mesial side.

Dont see a premaxillary tooth

 

I’m waiting for the seller’s answer regarding location.

Here are pictures from the base and mesial sides.

What position in the jaw did this tooth have?

Thanks a lot for the help.

Kind regards.

9389FBE9-B28B-4290-B976-1B2E41275CCA.jpeg

2EC2986E-C558-45F7-BC07-3ECE4599D18C.jpeg

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Well if it's a Tyrannosaurid it's a dentary tooth.  Unfortunately there are no characteristics to determine which one.   BUT not sure it's one could be Dromaeosaurus.  Not sure will to look at some of my teeth to compare against  

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11 minutes ago, Troodon said:

Well if it's a Tyrannosaurid it's a dentary tooth.  Unfortunately there are no characteristics to determine which one.   BUT not sure it's one could be Dromaeosaurus.  Not sure will to look at some of my teeth to compare against  

Interesting. Thank you!

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The teeth can be very similar but the serration count matched larger Tyrannosaurid teeth I have just as robust.   Looks like an anterior dentary tooth.  

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1 hour ago, Troodon said:

The teeth can be very similar but the serration count matched larger Tyrannosaurid teeth I have just as robust.   Looks like an anterior dentary tooth.  

Thank you very much for that info.

It’s from Montana and the county is Hill

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