Allosaurus

[Joebiwan3]

So this tooth i have was labeled by the seller as an Allosaurus premax tooth. The tooth is still in the matrix and the tip of it has broken off. The tooth measures 15/16 " long and is from the morrison formation ( bone cabin quarry ) in wyoming.

 

[Joebiwan3]

 

@Troodon @dinosaur man @Pemphix

[dinosaur man]

 has the robustness and the size of a typical Allosaurus tooth so Allosaurus 

[Troodon]

One cannot just look at Jurassic teeth from a photo and make a determination of what genus it is.  Most isolated anterior teeth are very hard to positively assign to a dinosaur without some quantitative analysis and then it may be a guesstimate .  Since your tooth is a partial, missing serrations it more subjective or not possible.   Its size and the presence of interdenticular sulci between the distal denticles suggest it can be an allosauridae or a meglosauridae.  Like to see a photo of the mesial carina like your 2 and 3 photo but a bit more of the labial side, no fingers please .  Next need to understand what the density count is of both Carina at least 1 mm wide more if possible.  

[Joebiwan3]

@Troodon ill get some better pictures tonight ( no fingers LOL ) and ill get some measurements as well. 

[Pemphix]

2 hours ago, Troodon said:

One cannot just look at Jurassic teeth from a photo and make a determination of what genus it is.  Most isolated anterior teeth are very hard to positively assign to a dinosaur without some quantitative analysis and then it may be a guesstimate .  Since your tooth is a partial, missing serrations it more subjective or not possible.   Its size and the presence of interdenticular sulci between the distal denticles suggest it can be an allosauridae or a meglosauridae.  Like to see a photo of the mesial carina like your 2 and 3 photo but a bit more of the labial side, no fingers please .  Next need to understand what the density count is of both Carina at least 1 mm wide more if possible.  

[Joebiwan3]

Ok everyone....heres a few more pics i tried to get a clear one of the labial side. I took some next to a ruler too i hope this helps.

[Joebiwan3]

[Joebiwan3]

[Joebiwan3]

[Joebiwan3]

[Troodon]

You will need to provide me a serration count.  

[Runner64]

15 minutes ago, Troodon said:

You will need to provide me a serration count.  

When I zoom in on photos, I count ~3/mm

[Joebiwan3]

@Troodon do u need a count of the visible serrations on the anterior and posterior as well?

[Troodon]

Yes both edged at least 1 to 2 mm wide has close to the center of the carina

[Joebiwan3]

Ok so am i counting each individual denticle? The anterior doesnt have that many. Most are worn or chipped off.....

[Troodon]

No you need to count the number of denticles in and area 1 to 2 mm wide preferably in the mid section of the tooth.

[Joebiwan3]

@Troodon i see 3 denticles per mm on the posterior....6 for every 2 mm....the anterior was about the same although it was hard to see because there arent many serrations left in tact....they looked to be about 3 per mm.

[Troodon]

Good exercise for you .   With photos and count good probability its Allosaurus 

[Joebiwan3]

@Troodon yah def a good exercise....im gonna start posting my raptor teeth soon. Ill list measurements for them when i do and we can see what we think they could be if raptor at all....

[Joebiwan3]

So what label would u put on this tooth then?

[Troodon]

Allosaurus sp.