Colorado: Tooth or Bone?

[Natalala]

Hey everybody! Thought I'd ask you all what you think this is. It was found  100 feet away from the St Charles River south of Pueblo, Colorado. Found half showing on top of the sand. At first I thought this was a shark tooth, but after looking through hundreds of online pictures of shark teeth, I can't find a single picture that looks identical. This is also very porous and lighter than a bison molar. It's shaped like a shark tooth with the front having two sides that angle up to the middle, and the back being one side. Only half of the top of it has a porous "root" and the other half curves down and has no rooting.

[GeschWhat]

Welcome to the forum. It looks like a piece of bone, but it will take someone more knowledgeable than me to tell you what kind. I'm sure the really smart people will chime in soon. 

[Peat Burns]

I'm getting a hoof core vibe from this one.  Let's see what others say.

[caldigger]

I agree with Peat, looking like hoof core to me.

[Natalala]

You're awesome! A search online shows that is no doubt a hoof core. HUGE THANKS! Thank you thank you! This all is the start of my learning process, being new to finding things in Colorado. Thank you!