Horse/equine lower leg bone & hoof?

[gnswede]

Found on the Kansas River. Here is what sure looks like a small horse lower leg bone and hoof. It has turned to mostly fossilized rock. I could be dreaming and it just be a plant fossil of some sort but it is hollow and the bottom of the "hoof" is indented just like a hoof pad area. All thought are welcome! 

[fossilus]

Looks like a piece of deer antler to me.

 

Horse would be separate bones, the hoof is not attached to the medial phalanx.

[gnswede]

Ok thanks. Good catch. I wondered about antler. It's turned to stone so must be old.