Taphonomic and sedimentological aspects from PICOS II paleontological site, a quaternary pond deposit of Alagoas, Brazil

Asakura, Yumi; Silva, Jorge Luíz Lopes da; Silva, Ana Paula Lopes da; Silva, Elaine Pollyanne Alves da; Omena, Érica Cavalcante

doi:10.1016/j.jsames.2016.07.009

Cited by 8 publications

(1 citation statement)

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“…From the seventies onward, some pioneering palaeontologists, such as Rolim (1971, 1974) and C. de Paula Couto (1980), developed an interest in these sites. The lagoas, cacimbas or tanques (i.e., the local names of erosional pools developed on metamorphic rocks) have been reported as rich fossiliferous deposits of Pleistocene mammal megafauna (Araújo‐Júnior et al, 2017; Waldherr et al, 2017, 2019), and recently, they have also become the subject of many taphonomic studies (e.g., Araújo‐Júnior et al, 2015, 2017; Araújo‐Júnior, 2016; Asakura et al, 2014; Dantas et al, 2012, 2013, 2014; Dantas & Tasso, 2007; Faria et al, 2020; M. F. C. F. Santos et al, 2002; Valli & Mützenberg, 2016a, 2016b). These deposits have a widely homogeneous stratigraphy, consisting (from bottom to top) of a coarse‐grained bed with fossil megafauna, followed by an intermediate sand layer, sealed by fine‐grained deposits.…”

Section: Introductionmentioning

confidence: 99%

Lagoa do Quari (São Raimundo Nonato, Piauí): Palaeoenvironment and wetland archaeology in Northeastern Brazil

et al. 2021

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Northeastern Brazil has thousands of wetland fossiliferous deposits with megafauna and, in some cases, associated lithic artifacts. The timing of the arrival of humans in South America and the extinction of megafauna is still debated and these sites contribute both to this discussion and to the reconstruction of the Late Pleistocene and Holocene paleoenvironment. Lagoa do Quari, 40 km south of São Raimundo Nonato, Piauí state, is a marsh deposit in the present semiarid caatinga environment, excavated by an interdisciplinary team in 2002–2003. This paper presents the archaeological, palaeontological, geological, chronological, stratigraphical and palynological results and their implications for the Quaternary of northeastern Brazil. The site has a rich megafaunal bonebed at the bottom, dominated by Eremotherium giant sloth remains with poor biodiversity, and a sandy‐silty deposit at the top; two 14C dates constrain this latter layer to 9,944–9,557 and 6,308–6,177 cal. years BP and the associated rich lithic industry of quartz and chert shows a technical continuity throughout the Holocene in the region. Palynology describes an open landscape with periodic wet phases, which could explain the richness of the archaeological occurrences in Holocenic Brazilian prehistory. This study offers a model of interdisciplinary enquiry into the paleoenvironment and prehistory of lowland South America.

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