The Jabuticabeira Shell Midden II belongs to a wider tradition of coastal mound-building often grouped under the term "sambaqui." Situated on the southern Brazilian littoral, these middens accumulated as living floors and burial grounds where successive generations discarded shells, bones and charcoal. Radiocarbon-calibrated contexts from the site span roughly 410 BCE to 880 CE, placing these deposits in the late Holocene when maritime environments and rich estuaries shaped human lifeway choices.
Archaeological data indicates populations at Jabuticabeira II exploited diverse marine resources and constructed stratified deposits that can reflect long-term occupation. The material archive—layers of shell, fish bone and human interments—speaks to repeated seasonal or year-round use of the coast. Limited evidence suggests regional connections with other sambaqui sites, as well as localized traditions in burial treatment and midden architecture.
Genetically, the recovered ancient DNA from five individuals provides preliminary windows into ancestry. While maternal haplogroups (C1c, B2) fall within known Native American diversity, and a single Y-chromosome Q instance aligns with indigenous paternal lineages, the small sample count demands caution. Further sampling across stratigraphy and neighboring sites is required to resolve patterns of migration, continuity and interaction.