1,500 BCE and spread to Veracruz, the Valley of Mexico, Guerrero, Oaxaca, Chiapas and the Pacific coast of Guatemala. The earliest of these are mostly female figures, probably associated with fertility rites because of their often oversized hips and thighs, as well as a number with babies in arms or nursing. When male figures appear they are most often soldiers. The production of these ceramic figures, which would later include animals and other forms, remained an important art form for 2000 years. In the early Olmec period most were small but large-scale ceramic sculptures were produced as large as 55 cm. After the middle pre-Classic, ceramic sculpture declined in the center of Mexico except in the Chupícuaro region. In the Mayan areas, the art disappears in the late pre-Classic, to reappear in the Classic, mostly in the form of whistles and other musical instruments. In a few areas, such as parts of Veracruz, the creation of ceramic figures continued uninterrupted until the Spanish conquest, but as a handcraft, not a formal art. Mesoamerican painting is found in various expressions—from murals, to the creation of codices and the painting of ceramic objects. Evidence of painting goes back at least to 1800 BCE and continues uninterrupted in one form or another until the arrival of the Spanish in the 16th century. Although it may have occurred earlier, the earliest known cases of artistic painting of monumental buildings occur in the early Classic period with the Mayas at Uaxactun and Tikal, and in Teotihuacan with walls painted in various colors. Paints were made from animal, vegetable and mineral pigments and bases. Most paintings focus one or more human figures, which may be realistic or stylized, masculine, feminine or asexual. They may be naked or richly attired, but the social status of each figure is indicated in some way. Scenes often depict war, sacrifice, the roles of the gods or the acts of nobles. However, some common scenes with common people have been found as well. Other subjects included gods, symbols and animals. Mesoamerican painting was bi-dimensional with no efforts to create the illusion of depth. However, movement is often represented. Non-ceramic sculpture in Mesoamerica began with the modification of animal bones, with the oldest known piece being an animal skull from Tequixquiac that dates between 10,000 and 8,000 BCE. Most Mesoamerican sculpture is of stone; while relief work on buildings is the most