Nicholson notes that as early as the Middle Formative (Preclassic) in the Olmec tradition, images of serpents with avian characteristics were often represented in several types of artifacts and monuments.
Some common techniques used to incorporate imagery of the Feathered Serpent into this architecture is relief carving, which involves “a sculpture with figures that protrude from a background while still being attached to it” and normally combined with tenoned heads, which are large pieces of stone carved but have a peg of sorts to insert them into the wall area, adding more depth and details to the architecture.
Other Mesoamerican structures, such as the ones in Tula, the capital of the later Toltecs (950–1150 AD), also featured profiles of feathered serpents.
[10] However, in the Popol Vuh, the K'iche' feathered serpent god Tepeu Q'uq'umatz is the creator of the cosmos.
The evidence of the importance of these deities to Mesoamerican culture lies in the architecture left from these civilizations and the rituals surrounding them.