SE Texas - Equus Jaw - Age?

[johnnyvaldez7.jv]

I found this horse jaw bone this past 4th of July holiday, on a river gravel bar, here in SE Texas. It's the Beaumont Formation and I find Pleistocene material here. 

I have found Pleistocene material in different preservation states. Some fully mineralized and some crumbly and flakey.  Some horse teeth has had some crazy beautiful colors and some not so much. With this bone... I can't tell. The bone is flakey... and the teeth are mostly covered in cementum. I see a sliver of the teeth within the jaw that might have some color to it. Not knowing much about teeth... does the amount of cementum on the tooth give an age for the horse or a preservation age? It looks really old. It has some weight but that may be due to most of the teeth being present. 

Thanks for your thought. 

Sorry for the many images... someone someday might use an image view later as a reference. 

Entire length is 16 inches 

[Jaybot]

My gut says maybe not with all that cementum, but that doesn't mean much.

Have you tried the burn test?

[jpevahouse]

Modern horse mandible

[johnnyvaldez7.jv]

@Jaybot @jpevahouse Thank you both.  Most of the Pleistocene horse bone that I've found has been mineralized solid with much darker colors. But I have mammoth bones crumbly and lightweight from a local gravel pit that were given to me, so I know preservation is different.  But I figured the teeth conditions were the answer.