Morrison tooth ID (Allo?)

[Zomb Ren]

As mentioned in the title, I am considering whether this tooth is from Allosaurus sp.?

CH 1.7cm

CBL 0.9CM

CBW 0.35CM

MESIAL: 5/MM

DISTAL: 5/MM

I think mesial serrations extend almost to the base 

 

[Zomb Ren]

Washakie County, Utah

[Troodon]

Can you verify the density of this tooth midline.  5 denticles per mm?

 

If these are your photos let me suggest that you do not use hands to take them, several images are not sharp.  Soft Putty can be used to prop tooth.

Need a sharp photo of Base and one of the mesial carina

 

[Carl]

30 minutes ago, Zomb Ren said:

Washakie County, Utah

Washakie County is in Wyoming

[Zomb Ren]

1 hour ago, Carl said:

Washakie County is in Wyoming

Oh yes,it's in WY haha. Thanks friend

[Zomb Ren]

12 hours ago, Troodon said:

Can you verify the density of this tooth midline.  5 denticles per mm?

 

If these are your photos let me suggest that you do not use hands to take them, several images are not sharp.  Soft Putty can be used to prop tooth.

Need a sharp photo of Base and one of the mesial carina

 

Thanks for your reply. Are these photos clear enough?

[Troodon]

Yes and one of the base

[Zomb Ren]

8 hours ago, Troodon said:

Yes and one of the base

Here are the base.

[Troodon]

Thank you.

I still need you to recheck the serrations density mid line 5mm wide on both carina. 

[Zomb Ren]

58 minutes ago, Troodon said:

Thank you.

I still need you to recheck the serrations density mid line 5mm wide on both carina. 

Are these photos qualified haha?

Thanks

[Troodon]

No. 

[Zomb Ren]

3 minutes ago, Troodon said:

No. 

I recheck serrations.  d serrations:4/mm; m serrations: 6/mm

[Troodon]

Thank you.  It's an Allosaurus sp.

[Zomb Ren]

1 minute ago, Troodon said:

Thank you.  It's an Allosaurus sp.

Really thanks!!! 

[AranHao]

@TroodonSorry for bothering you,sir

I have some doubts. What is the basis for you to identify this tooth as Allosaurus? Is it because it mesial carina extend to the base? its DSDI is 1.5, it is similar to the characteristics of marshosaurus.

Is it necessary to have two conditions at the same time to identify it as marshosaurus? (DSDI ＞ 1.2 & mesial carina extend down at 2/3)

thank you 

Edited November 19, 2022 by AranHao

[Troodon]

In this example the mesial carina extends to the base or very close so that would exclude it being a meglosaurid. 

You always have to look at all the physical characteristics including ratios CBR, CHR, DSDI.  Rarely can you look at just one characteristic on jurassic teeth and say its that.

The tooth is odd with that lingual twist you dont see that on Marshosaurs but if its from that locality its morisson.

[AranHao]

12 minutes ago, Troodon said:

In this example the mesial carina extends to the base or very close so that would exclude it being a meglosaurid. 

You always have to look at all the physical characteristics including ratios CBR, CHR, DSDI.  Rarely can you look at just one characteristic on jurassic teeth and say its that.

The tooth is odd with that lingual twist you dont see that on Marshosaurs but if its from that locality its morisson.

Thanks for your explanation, it's very clear