“…The following arguments allowed us to propose not only an anthropic origin for this accumulation but also that it was not related to nutritional, technological or medicinal purposes: 1) only one vertebrate taxon was represented in the vessel although there are different taxa living in the area, pointing to an intentional selection of amphisbaenians, 2) the MNI was too high for such a small space, given that these solitary animals do not aggregate in nature, 3) they lay just a few eggs at a time, 4) the bones are very small and delicate, 5) the state of preservation of the faunal remains was excellent and there were no signs of natural or anthropic damage, 6) these animals live underground and are rarely seen on the surface, 7) because of their size, they have a very low economic yield, 8) the amphisbaenid bones were not associated with any other remains except the ceramic vessel itself, 9) the vessel was filled with sediments and covered by a ceramic bowl, 10) amhisbaenids do not appear in any other sample of the site and other species recovered in different structures of Tolombón are absent in the circular structure (e.g., mammals -such as Artiodactyla, rodents, and carnivores-and birds), 11) snake-like designs are very popular in the iconography of the Regional Developments Period, 12) a similar assemblage was recovered in another site of NW Argentina (amphisbaenians inside a ceramic vessel, filled with sediments and covered by a ceramic bowl, although in this second case, the bones were associated with the bones of an infant and the vessel was decorated with snakes), and 13) remains of amphisbaenians and snakes have been found inside ceramic vessels -filled with sediments and covered by ceramic bowls-in other parts of the world such as Peru or the Near East (see for example Bailon, 1997;Potts, 2007 andGoepfer et al, 2013), and they have been interpreted as animal sacrifices Kligmann et al, 2013).…”