Although there is no explicit evidence of bloodletting in the archeological records, there are strong beliefs that they practiced it. This is being proven by numerous ceramic spikes, thorns and artifacts which have been cited as blood letters. In Elmanati site, disarticulated skulls and femurs were found. In addition, the skeletons of newborn children were discovered. This leads to speculations that infant sacrifices were being conducted in these places. Nevertheless, it is yet unknown how these infants met their deaths.
Innovation of writing by Olmec played a significant role in art and beliefs of later Mesoamerican cultures. In 2002, there was discovery of bird, speech scrolls and glyphs. These artifacts were crucial in enabling the Mesoamerican to organize their seasonal rituals. In addition, they were able to plan their activities that were significant in improving their religious beliefs. Hieroglyphs such as Epi-Olmec were also crucial in developing the Mesoamerican art.
Chichen Itza and Tula have many similarities in art and architectural designs. Both cities had similar temples, an aspect that indicated that there was a close relationship between the two sites. People in these areas have similar religious structures that they used to appease their gods. In addition, the Sacred Cenote, which was a large cylindrical and natural sinkhole, had a religious importance to the local people. Tula copied some of the architectural designs from such structures. This is an indication that Itza was established before Tula.
Major beliefs in Tula had some similarities with those of Itza. The artifacts indicate that the carvings and the writings had major similarities. For instance, both cities portrayed a close relationship with Plumed Serpent. The art and architecture includes different depiction of him. In addition, the carvings of big-nosed god had some relationship between