Possible Globidens phosphaticus tooth?

[Othniel C. Marsh]

I recently saw a globular mosasaur tooth up for sale labelled as Globidens phosphaticus. I am conscious, however, that a number of teeth labelled as Globidens are in fact from Igdamanosaurus, Igdamanosaurus aegypticus in particular, so is this tooth actually a Globidens?

 

 

Thanks in advance for any guidance
Othniel

[Harry Pristis]

My personal opinion is these are all Globidens sp.  From Morocco,for comparison:

 

 

[North]

This thread might help you.

 

http://www.thefossilforum.com/index.php?/topic/134860-globidensigdamanosaurus-differentiation/