South American cultural grouping, defined almost entirely by ceramic styles, from Marajo Island, Amazonia, and tentatively dated to c.1400 bc. The ceramic assemblages belong to the Zone Hachure Horizon defined in the Amazon Basin. Typical vessel forms include rounded bowls and jars. Some are decorated with fine parallel or cross‐hatched lines with zones defined by deeply incised outlines. There is no evidence for agriculture associated with groups using this pottery. Settlements were small, perhaps multi‐family communal residences.