Another jawbone age

[Dennis]

Hi, can anyone tell age from these jawbone pics? I buried the head to get the flesh off so the jawbone got pretty dirty. I can clean it if it's too dirty to tell.
Thanks.

 

[Dennis]

I can take more pics if it helps

 

[fairchaser]

Looks at least 3.5.

 

[TN Larry]

2.5 or 3.5. Hard to tell since it's dirty from being buried. If you could spray it off a little and take a top down pic of each side, it would help.