Evidence for the earliest known Maya calendar has been found in San Bartolo, Guatemala, by researchers at The University of Texas at Austin. While excavating murals at a site in San Bartolo, two fragments were found and pieced together to form the notation "7 Deer," which dates back more than 2,000 years to 300 B.C., several centuries older than previously obtained evidence..."The Maya calendar is one of the most distinctive and well-known features of the culture and of traditional Mesoamerican peoples. It was in use for centuries before the arrival of Europeans, and some of it is still being used...