If you want people to believe you, here's what you do buddy: Go back to the hole that you pulled the skull from and dig out the rest of the body. Take pictures.

It's not real. The mandible would not stay attached, it is only held on by muscles and ligaments; you would be taking it out of the ground in two pieces at that stage of decomposition. In addition to that, there are no cranial sutures. Also, as someone mentioned before, you take pics as you are digging it up before you know what it is...? A little fishy all by itself.

For Chrissake. Total hoax. OP you are full of it. You know the thing is fake. You picked it up for a tenner somewhere. I hope the mods shut this one down. What a load of B.S.

The closest pictures I have been able to come up with (credits to my hubby for this was his suggestion) is gorilla [or ape] skull. We're looking at the teeth and the eyebrow line which is distinct. I haven't found an exact match; but, the overall gorilla and ape skulls are closest so far.

You silly goose!
I did this exact thing when we first moved into this house. Its a historic home with a VERY colorful past. We had the original builders grandson over who was older than dirt to talk, get some history that wasnt rumor, scan some pics and tell us some stories. Well.. needless to say.. the truth was a little more spooky than the rumors! Then the evil in us hatched a plan. My husband and I buried one of those "looks like the real thing" human skulls in the back yard where we were digging a garden spot.. started yelling for the kids ... and screaming ensued.

You cant fool a fooler , Bubba.

2nd, case solved

Call a museum and let them know what you got. They can walk you thru the rest