A MYSTERIOUS skull with huge eye sockets and fanged teeth, that has left scientists flummoxed, may have belonged to an alien, it is claimed. The strange skeleton head, described as 50 per cent bigger than a standard sized version, wasy found by Danish contractors replacing old sewage pipes workers on Sealand Island. The workers were digging out the 100-year-old pipes when they found the skull under a building that once belonged to a butcher, it is alleged. Experts at a Veterinary College in Copenhagen, who examined the find, concluded: "Although resembling a mammal, certain features make it impossible to fit the animal into Linnaean taxonomy." The scientists could not link it to any known species on Earth. Subsequent carbon dating of the skull at the University of Copenhagen's Niels Bohr Institute for the sciences, determined it was about 800 years old - which only added to the mystery as it was found within pipes of just a century old. The skull was found in 2007 but it was not