Help ID Whale tooth+

[PODIGGER]

Had a beautiful day hunting the Peace River, FL yesterday and came away with some intriguing finds.  From prior postings and photos I reviewed provided by @Harry Pristis and @Shellseeker I believe the first exciting find of the day was a small whale tooth and I am seeking confirmation on that here.  

 

The tooth measures 37 mm x 10 mm and I believe it shows the hint of the ring pattern referenced by Shellseeker as his tell tale sign of whale.

 

 

 

 

 

 

 

 

 

 

 

This next tooth has me wondering if it is cetacean or somehow a possible land mammal.  I am not sure if it is one tooth with an odd split or tooth teeth fused together with an odd break on one end.  It measures 22mm x 8mm:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The third oddball measures just 15 mm x 8 mm and I suspect is land mammal.  I have nothing to back this up and would appreciate any comments/ideas.

 

 

 

 

 

 

 

 

 

Lastly, this specimen looks to me like the roots of a mammoth tooth fused together with some jaw material.  I am questioning that id because the ends appear to me to be worn down to this level, not just broken off.  I find that a little surprising that the teeth would wear that way.  The piece measures 39 mm x 21 mm.

 

 

 

 

 

 

 

 

 

Thanks in advance for any comments or input you all can provide.

[Harry Pristis]

The first item is the core of a whale tooth; but, I don't recognize the other objects.

 

[PODIGGER]

Thanks Harry, always appreciate your willingness to help!

[Shellseeker]

It is always tough and go on these fragments.

I am reasonably sure that #3 is the broken tip of a mammoth tooth root.  Every time I find one ,  it takes me a minute or  to make the ID.

 

#4 is possibly a chunk of Mammoth or Mastodon tooth root. It can get very different looking fro the respective enamels.

 

[PODIGGER]

Thanks Jack, I was leaning towards mammoth on those.