Phytosaur tooth

[Othniel C. Marsh]

Below is an unidentified phytosaur tooth from the Norian of the Chinle Formation which I've been struggling to identify to a genus or species level.

 

 

Thanks in advance for any proposed ID's
Othniel

[Fossildude19]

Better lit, in focus pictures may be needed. 

 

Cropped and brightened:

 

  

[Carl]

Pretty sure phytosaur teeth have carinae and serrations, which this lacks. I'm getting an amphibian vibe from it.

[CDiggs]

@Romigodon

[Othniel C. Marsh]

On 2/21/2024 at 2:02 PM, Carl said:

Pretty sure phytosaur teeth have carinae and serrations, which this lacks. I'm getting an amphibian vibe from it.

 

I'll have to take a closer look at the tooth to see if either of the above are present but just very worn, but I think you're right. If it is an amphibian could it be Apachesaurus?

[Carl]

21 minutes ago, Othniel C. Marsh said:

 

I'll have to take a closer look at the tooth to see if either of the above are present but just very worn, but I think you're right. If it is an amphibian could it be Apachesaurus?

Can't say I know my Chinle amphibians very well AT ALL, so no opinion there.

[Othniel C. Marsh]

A closer look has been taken and there are no serrations or carinae: just ridges. Apachesaurus is also probably too small for such a tooth to belong to it. I reckon that it belongs too an Anaschisma, as it appears to be the most common amphibian in the Chinle Formation and the only amphibian large enough to have such a tooth, but I will reserve my judgement until those with greater expertise in the field have given their opinion.

Edited February 23 by Othniel C. Marsh