Geochemical study on fossil vertebrates from some specific Permian and Triassic beds of the Paraná Basin (Brazil): A preliminary approach

Corecco, Leonardo; Pereira, Vitor Paulo; Soares, Marina Bento; Schultz, César Leandro

doi:10.1016/j.jsames.2021.103362

Cited by 2 publications

(1 citation statement)

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“…X-ray diffraction data analysis (Figure 4) demonstrated the presence of calcium silicate and the absence of calcite. The enrichment of chemical elements in fossils is related to the weathering of the surrounding rocks (Corecco et al, 2021). The data suggest that the Caating saloon, where the fossils were preserved, had low physical weathering (Benhresmeyer, 1978) due to it being ~700 m distant from the cave entrance and chemical weathering (Pokines et al, 2018), probably due to the low humidity rate in this saloon.…”

Section: X-ray Diffractometrymentioning

confidence: 90%

Osteohistological analysis and preservation stage of Coendou magnus Lund, 1839 (Rodentia, Erethizontidae) fossils recovered at Toca da Barriguda Cave, Northeastern Brazil

Oliveira,

Silva,

Campos

et al. 2023

Rev. bras. paleontol.

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Studies on taxonomy, taphonomy, and paleoecology have been conducted on fossils from carbonate caves, however, surveys detailing the fossilization processes and bone microstructure of specimens from caves are still scarce. Our paper provides an osteohistological analysis and X-ray diffraction of a fossil rib from the extinct South American porcupine Coendou magnus Lund. Our results allowed us to interpret that there was microstructural preservation and low replacement of the organic part of the bone by minerals present in the surrounding sediments, such as apatite and abundant non-silicate minerals in sedimentary rocks, characterizing preservation in an environment with poor weathering. Keywords: cave, X-ray diffraction, late Pleistocene, histology, porcupine.

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Section: X-ray Diffractometrymentioning

confidence: 90%