Is it possible to ID these shark and mosasaur teeth?

[PossumTeacher]

Hi, everyone. Hope you are well and healthy!

 

Would it be possible to narrow down the identification of these teeth (pictures below)?

 

The shark tooth, from ~40-65 Ma (Paleogene, Paleocene/Eocene), Khouribga (Morocco), came without any label from the seller, but I suspect it might be a Cretolamna sp. (or Brachycarcharias ?atlasi) specimen, though I'm not entirely sure.

 

As for the mosasaur teeth, I was wondering if they might belong to two different species, although I’m aware that mosasaurs had heterodonty. They are labeled as Prognathodon sp. from the Maastrichtian (~66 Ma), Oued Zem, Khouribga, Morocco (Ouled Abdoun Basin). However I understand that the genus needs a thorough taxonomic revision, I was hoping someone could help confirm if they belong to different species, verify that they are indeed Prognathodon specimens, and/or narrow down the identification to the species level. My guess is that one tooth (or two teeth) could be the median or back tooth of Thalassotitan atrox and the other two (or other one) could be median teeth from Prognathodon currii.

 

Additionally, is it possible to determine with any certainty which part of the jaw these teeth (both shark and mosasaurs) came from?

 

Sorry for the blurry pictures, it was the best I could take in this zoom

 

Thanks so much for any help!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Edited September 7 by PossumTeacher
spacing and blurry pictures