A tooth, and a jawbone? Help with ID please.

[CrashLizard]

These two items were found sifting for shark teeth on a beach near Venice Florida.  Ruler is in inches, sorry. 

The larger I believe is a tooth from a herbivore.  I'm new and not sure how to differentiate, or if it may be from something else. 

The smaller one looked like a piece of crab pincher to me, but has a row of round hollows that correspond to the thickness of the piece as it tapers. (Tooth sockets?)  The break at the larger end appears to be hollow/filled with sediment.?  The tip appears broken off and hollow as well.  There are ridges along the length, and it is slightly curved.(I tried to get it all in the pics)  Is this likely a fish or small reptile? 

Any help or suggestions are appreciated.

[Al Dente]

7 minutes ago, CrashLizard said:

The larger I believe is a tooth from a herbivore.  I'm new and not sure how to differentiate, or if it may be from something else. 

The smaller one looked like a piece of crab pincher to me

 

You are right, the larger one is a piece of a horse tooth and the other part of a crab claw.