Is this a juvenile T.rex tooth or a nanotyrannus

[Troodon]

Serration density, no compression, lingual twist and denticle shape still say Tyrannosaurid.  What can I say we have no real understanding of the DR dentition.  Its really an indeterminate tooth IMO until we see more.

[FB003]

Final thought is if its dakotaraptor I'm jealous because I want one lol

[jikohr]

4 minutes ago, Troodon said:

Serration density, no compression, lingual twist and denticle shape still say Tyrannosaurid.  What can I say we have no real understanding of the DR dentition.  Its really an indeterminate tooth IMO until we see more.

Could it just be the jaw position? Tyrannosaur anteriors twist a lot more closer to the front of the jaw, do Dromaeosaurs do that?

[Troodon]

20 minutes ago, jikohr said:

Could it just be the jaw position? Tyrannosaur anteriors twist a lot more closer to the front of the jaw, do Dromaeosaurs do that?

 

Only Dromaeosaurus that I know has a lingual twist and that is carried throughout the dention.

  The few holotype teeth were straight

[Troodon]

Have one suggestion email P Currie with all the info @jikohr

[jikohr]

2 minutes ago, Troodon said:

Have one suggestion email P Curri with all the info @jikohr

Sounds like a plan!

I, uh, don't have his contact info though.

 

[Troodon]

Pm

[jikohr]

20 minutes ago, Troodon said:

Pm

Message sent.

Measurements, pics, and a dream.

I'll keep y'all posted!

[Fossil Maniac]

2 hours ago, Troodon said:

Have one suggestion email P Curri with all the info @jikohr

Who is P curri?

[Dino Dad 81]

Congrats, it's clearly an awesome tooth regardless. Such an interesting group of characteristics. @Troodon, even if DR is an extrapolation (twist, base, etc.) is it even possible for it to be a tyrannosaurid with that DSDI? Looks like it's on the order of 1.6 to me.

 

CORRECTION, DSDI isn't as high as it first looked... but still high for rex.

Edited July 1, 2022 by Dino Dad 81

[Fossil Maniac]

2 hours ago, jikohr said:

Sounds like a plan!

I, uh, don't have his contact info though.

 

If that doesn’t work out you could message Thomas Carr 

[Top Trilo]

17 minutes ago, Fossil Maniac said:

Who is P curri?

Phillip J Currie of Canada.

This has been a very interesting thread that I have been gladly following.

[Troodon]

21 minutes ago, Fossil Maniac said:

Thomas Carr

Does not deal with non-academics or specimens that are not in a museum.  Aniti collector type, good we have access to all these other paleontologists who work with US types

[Fossil Maniac]

16 minutes ago, Troodon said:

Does not deal with non-academics or specimens that are not in a museum.  Aniti collector type, good we have access to all these other paleontologists who work with US types

He's one of those people who think people shouldn't have any fossils?

[Troodon]

15 minutes ago, Fossil Maniac said:

He's one of those people who think people shouldn't have any fossils?

I'll let you decide.  This the first page from his book on the Hell Creek Guide that was never published from a beta copy

[Fossil Maniac]

7 minutes ago, Troodon said:

I'll let you decide.  This the first page from his book on the Hell Creek Guide that was never published from a beta copy

I don't understand why people are like this. He thinks all vertebrate fossils are pricless? Look at a Knightia or a Spinosaurus tooth. Scientifically important specimens should be kept in museums but otherwise I don't see why someone shouldn't have one

[Fossil Maniac]

1 hour ago, Top Trilo said:

Phillip J Currie of Canada.

This has been a very interesting thread that I have been gladly following.

Is he a expert on Tyrannosaurs?

[Troodon]

57 minutes ago, Fossil Maniac said:

Is he a expert on Tyrannosaurs?

 

The best ..an supports Nanotyrannusc and works with collectors

[jikohr]

1 hour ago, Troodon said:

I'll let you decide.  This the first page from his book on the Hell Creek Guide that was never published from a beta copy

 

I'm sure he and I would get along great.

[Fossil Maniac]

4 minutes ago, Troodon said:

 

The best ..an supports Nanotyrannusc and works with collectors

Great! Sounds like a pretty cool guy.

[JoeS]

4 hours ago, jikohr said:

Could it just be the jaw position? Tyrannosaur anteriors twist a lot more closer to the front of the jaw, do Dromaeosaurs do that?

Very interesting tooth you got there. What mainly throws me off the DR trail is that beefy cross section, as already mentioned by @Troodon.
Can't wait to hear what Philip Currie has to say!

fyi, here an anterior tooth of Acheroraptor with a clear twist of the mesial carina, to answer your question. (ID'ed by P. Currie )






 

[Fossil Maniac]

5 minutes ago, jikohr said:

 

I'm sure he and I would get along great.

@Troodon and Thomas would get along so much!

[Troodon]

15 minutes ago, JoeS said:

Very interesting tooth you got there. What mainly throws me off the DR trail is that beefy cross section, as already mentioned by @Troodon.
Can't wait to hear what Philip Currie has to say!

fyi, here an anterior tooth of Acheroraptor with a clear twist of the mesial carina, to answer your question. (ID'ed by P. Currie )






 

 

Thanks for reminding me of that twist on your anterior tooth. 

It also has no serrations on the mesial edge which is much more typical of these Dromaeosaurids.  Im.  Very nice.

 

Any problem using your images in my Acheroraptor ID topic?

 

[Dino Dad 81]

@JoeS Gorgeous tooth. Does it have any fluting? If you could share shots of the sides, that'd be much appreciated.

[IsaacTheFossilMan]

3 hours ago, Top Trilo said:

This has been a very interesting thread that I have been gladly following.

 

I agree wholeheartedly! The drama, the twists (not just in the tooth!)