MEXICO CITY (AP) - Archaeologists say they have turned up at least 130 skulls of human sacrifice victims in a field in central Mexico, one of the first times that such a large accumulation of severed heads has been found outside of a major pyramid or temple complex in Mexico. Georgia State University archaeologist Christopher Morehart says as many as 200 adult skulls or their equivalent in bones parts have been excavated so far. The find in a communal farm field just north of Mexico City has experts puzzled. Morehart said this week he was startled to see such a large number of skulls at was a small shrine between 660 and 860 A.D., and is today no more than a bump in a farmers' field.