I've a pic of a human skull with horns but I can't find any information but this:

Human Skull on Display in French Museum
Philadelphia
Human skulls with horns were discovered in a burial mound at Sayre, Bradford County, Pennsylvania, in the 1880's. Horny projections extended two
inches above the eye-brows, and the skeletons were seven feet tall, but other than that were anatomically normal. It was estimated that the bodies
had been buried around A.D. 1200. The find was made by a reputable group of antiquarians, including the Pennsylvania state historian and dignitary of
the Presbyterian Church (Dr. G.P. Donehoo) and two professors, A.B. Skinner, of the American Investigating Museum, and W.K.Morehead, of Phillips
Academy, Andover, Massachusetts. The bones were sent to the American Investigating Museum in Philadelphia, where they were later claimed to have been
stolen and have never been seen again.
[edit on 15-8-2006 by Telos]