Dyrosaurus tooth?

[jikohr]

Hi Everyone!

 

I acquired this tooth in a big batch of Moroccan Plesiosaur teeth from the Moroccan phosphates and it stood out as something different. It has 2 carinae and numerous striations. I'm thinking croc and wondering if it is Dyrosaurus. 

This thread discussed some similar teeth and called them Dyrosaurus, including this description which matches mine to a T,

 

"Dentition:  The teeth are homodont and conical, with a cylindrical cross-section. They are long, slender, and divided into asymmetrical labial and lingual surfaces by well-developed anterior and posterior carinae. Striae are present on both sides of the crowns in the anterior part of the jaw. The tooth size decreases from front to back; the posterior teeth are shorter, slightly compressed lateromedially, and more robust than the more anterior teeth. Coronal striations are reduced or absent in the posterior teeth"

 

But wanted a second opinion in case opinions/science has changed. It measures 5.68 cm and has a circular cross section with a diameter of 1.45 cm at it's base.

What do you all think? Any insight is appreciated as always!

 

[doushantuo]

The histology of the cross-sectional view makes me think "Dyrosaur " is a possibility

[Othniel C. Marsh]

I'd be inclined to identify your tooth as that of an indeterminate dyrosaurid. The tooth matches the morphology typical of both Atlantosuchus and Dyrosaurus, and whilst there may well be a means of assigning such isolated teeth to a specific genus I'm not aware of how one would go about it.