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I have seen on multiple occasions "peccary" teeth for sale originating from the Miocene of the Gansu Province in China. I have never heard of any fossil representative of Tayassuidae being seen outside of the New World, so what might they be? This is a picture of one such "peccary tooth". I'd put this in fossil ID put I thought it was quite a general question.

Recently bought a piece of partial lower jaw with a tooth, the seller said it was a Ictitherium but I’m not so sure. Need some help with identification.

I have some Gansu fossils from the Linxia Basin, but I wasn't 100% sure on ID. The teeth were sold as Entelodont molars, and my current assumption is that they belong to Paraentelodon macrognathus from the Oligocene deposits in the Linxia Basin. From what I've read, they are similar to Daeodon, at least size wise. I think the formation would be the Jiaozigou Formation? But I'm not entirely sure. The Chleuastochoerus jaw, i have no idea. I think there are 2 species present in the Linxia Basin, and I don't know if it's possible to ID them down to species level without more specific provenance. That said, I honestly don't know anything about this animal, aside from it being a prehistoric pig. I know the fang had some glue on it when I put some acetone on it during prep, so it's probably repaired. The back side had big globs of glue that turned pretty nasty in acetone, but fortunately, there was nothing on the jaw itself, and I easily dug the teeth hidden inside the matrix. Not really sure if I did a great job though since I don't prep that often.

Good evening folks. I am requesting a verification/confirmation for a tooth I purchased over 10 years ago listed as Platybelodon, Miocene, Gansu, China. It measures 7cm long, 4.2cm wide and 6.3cm tall.