Jump to content
JojoMozza

Daspletosaurus? Tooth from Judith River Formation, Montana, which genus?

Recommended Posts

JojoMozza

I bought this nice theropod tooth online and the seller told me that it was a Daspletosaurus from the Judith River Formation, Montana. While looking online for more info, I found a few people saying that some dealers lie about the genus of tyrannosaurid teeth (especially with Daspletosaurus) as they are hard to identify.

Just wondering if anyone here can I.D. this tooth?

Suggestions are much appreciated!

SAM_6513.JPG

SAM_6514.JPG

Share this post


Link to post
Share on other sites
Ramon

It may be hard to identify a specific genus. Scientists use what's called serrations by millimeter. They measure the serrations or the little spikes at the edge of the tooth. Depending on how many are in a mm you can know which species. Also size matters. Hope this helps!!!

Share this post


Link to post
Share on other sites
Ramon

Also daspletosaurus teeth are usually 4 inches long 

Share this post


Link to post
Share on other sites
Canadawest
6 minutes ago, Ramon said:

Also daspletosaurus teeth are usually 4 inches long 

 

Huh?

 

News to me.  I've collected a thousand or more Tyrannosaurid teeth from Judith River aged deposits and they are not 4 inches long.  Even teeth from their bigger cousins T rex in the Late Maastrictian are usually about 3 inches.  I doubt if i've ever found a dozen T rex teeth a full 4 inches in length.

Share this post


Link to post
Share on other sites
-Andy-

With such a small tooth it could be any of the three tyrannosaurs. The experts here know best.

 

Just now, Canadawest said:

 

Huh?

 

News to me.  I've collected a thousand or more Tyrannosaurid teeth from Judith River aged deposits and they are not 4 inches long. 


I was told teeth 3.5 inches or longer could reasonably be attributed to Daspletosaurus. Is that wrong?

Share this post


Link to post
Share on other sites
Susan from PA
2 hours ago, -Andy- said:

With such a small tooth it could be any of the three tyrannosaurs. The experts here know best.

 


I was told teeth 3.5 inches or longer could reasonably be attributed to Daspletosaurus. Is that wrong?

I think that statement was made in relation to people selling smaller Tyrannosuarid teeth from the Judith River Formation and identifying them as Daspletosaurus in order make more of a profit, due to the popularity of the name "Daspletosaurus", versus Albertosaurus and Gorgosaurus.  It was stated that all Tyrannosaurid teeth from this formation should be identified as Tyrannosaurid indet.   A tooth that is 3.5 inches in length may be attributed to Daspletosaurus due to its size, but not with 100% certainty.  All Tyrannosaurid teeth in my collection from the Judith River Formation are identified as Tyrannosaurid indet., regardless of the size. 

Share this post


Link to post
Share on other sites
JojoMozza

Thank you all so much for the information. I'm a bit disappointed that it is not a Daspletosaurus, but it is a Tyrannosaurid, which is still pretty awesome. What are the different Tyrannosaurids could this possibly belong to?

I guess I'll have to label this tooth as Tyrannosaurid indet as LordTrilobite suggested.

Thanks again!

Cheers!

Share this post


Link to post
Share on other sites
Susan from PA
1 hour ago, JojoMozza said:

Thank you all so much for the information. I'm a bit disappointed that it is not a Daspletosaurus, but it is a Tyrannosaurid, which is still pretty awesome. What are the different Tyrannosaurids could this possibly belong to?

I guess I'll have to label this tooth as Tyrannosaurid indet as LordTrilobite suggested.

Thanks again!

Cheers!

The Tyrannosaurs that the tooth could belong to are Daspletosaurus, Albertosaurus, or Gorgosaurus.    Still a very nice tooth despite the fact that Tyrannosaurid indet. is the best identity at this time.  Congrats! :) 

Share this post


Link to post
Share on other sites
JojoMozza
13 hours ago, Susan from PA said:

The Tyrannosaurs that the tooth could belong to are Daspletosaurus, Albertosaurus, or Gorgosaurus.    Still a very nice tooth despite the fact that Tyrannosaurid indet. is the best identity at this time.  Congrats! :) 

 

Thank you very much Susan! Any of those three possibilities would be awesome and am very happy it is a Tyrannosaurid tooth.

I now know to take what fossil sellers say when it comes to Tyrannosaurid teeth with a grain of salt.

Cheers!

Jojo

Share this post


Link to post
Share on other sites
-Andy-
18 hours ago, JojoMozza said:

Thank you all so much for the information. I'm a bit disappointed that it is not a Daspletosaurus, but it is a Tyrannosaurid, which is still pretty awesome. What are the different Tyrannosaurids could this possibly belong to?

I guess I'll have to label this tooth as Tyrannosaurid indet as LordTrilobite suggested.

Thanks again!

Cheers!

 

Tyrannosaurids are awesome, so don't be disappointed!

 

If you are like me who simply must give an ID to your fossils, label it instead as Gorgosaurus/Albertosaurus/Daspletosaurus. It's one of the three species after all ;)

Share this post


Link to post
Share on other sites
zekky

Fun tooth, but sadly there is no current way to know the difference between the two species. If a tooth is 4 inches + and fat then it's likely Daspletosaurus, but that's the only one. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×