Complex sentence: Many Classic Maya paintings, particularly on vases, testify to the existence of a rich maize mythology centered on the Tonsured Maize God; the murals of San Bartolo demonstrate its great antiquity.
Split into simpler sentences: Many Classic Maya paintings, particularly on vases, testify to the existence of a rich maize mythology centered on the Tonsured Maize God. The murals of San Bartolo demonstrate its great antiquity.