Mosasaur jaw with shark- and replacement tooth?

[Jurassic_Nature]

Hello everyone,  I was wondering which parts of this rooted mosasaur tooth are real. There is a second tooth in it which looks like a replacement tooth and next to it there is also a shark tooth. Can you tell if the bones of the jaw are real? I thought the bigger tooth could be glued on the root, like it's often the case with mosasaur teeth from morocco.  And why is there a shark tooth in the bone?

Any insight is appreciated.

 

[Brevicollis]

Yup, the tooth is glued back with plaster to the root. But the other teeth and bones seem to be real. Dont see this negative, its still a nice looking piece for display !

Edited March 24 by Brevicolis

[rocket]

Its coincidence, teeth are often mixed in the sediment. I do not think it is a replacement tooth, three different ones together

Might be it has original skull bones attached, reglued