Are these Spinosaurus teeth?

[Kim Eun-hyang]

I purchased a tooth, but I want to know if it is a crocodile tooth or a spinosaurus tooth. Thank you.

[Balance]

I think you’ll need sizes at the minimum. 
 

for me, I just bought a basic model spino tooth for my daughter. It’s a huge tooth. Like hold it in your hand size. A croc that size would have been 50’ long and 5’ tall. So I don’t know how they could be of similar dimensions. 
 

Best of luck

 

jp

[BirdsAreDinosaurs]

Better pictures of all sides of the crown are also needed to be able to make a call. My first impression is that it is possibly a croc tooth as it appears quite round and blunt. But hard to be sure with these pictures.

[TyBoy]

The crown looks like a crocodyliform possibly Elosuchus.  The root has repairs and probably composited to crown.