Unknown mammal vertebra

[Mignoffo]

This was a creek find in Central Illinois. We don't know how old or really anything about it. Bison remains turn up somewhat frequently but it looks like maybe horse? probably modern? I apologize for the difficult to read scale. It is a six inch scale, that's all I have at work unfortunately.

 

Thank you for any help.

[Osteobyte]

Hello,

I can only rule out horse, from attached excerpt from Brown & Gustafson's 1979 book, A Key to Postcranial Skeletal Remains of Cattle/Bison, Elk, and Horse.

 

[LordTrilobite]

Looks like bovid axis vertebra.