Abstract
The objective of this study is to report Punta Maldonado’s most representative species of the Pliocene meiofauna which is identified in the coastal sediments, located between Oaxaca and Guerrero states along the Pacific Ocean, Mexico. Punta Maldonado’s marine terraces are constituted by three lithostratigraphic units: the bedrock is fine-grained marine sandstone which is uncomfortably overlain by continental deposits made up of fine-grained sandstone. However, the youngest deposits are made up of a sequence that consists of humus and sandstone beds. The marine strata in Punta Maldonado must be considered as a new lithostratigraphic unit of the Cenozoic era which has not been formally described. The taxonomic identification of 21 foraminifera and 8 ostracods genera corresponds to the early Pliocene (Piacenzian). The analysis of the meiofauna has allowed us to retrieve corals, crustacean remains, echinoderm spicules, molluscs (gastropods, pelecypods and scaphopods) and six genera of fish otoliths. The ecological relationships of these biota will be interpreted to a better understanding of the shallow marine biocenosis in the Pacific Mexican Coast during the Pliocene.
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Acknowledgements
This study was supported by SEP-PROMEP Project “Aplicación de los moluscos (bivalvos y gasterópodos) del Neógeno (Plioceno) como proxies para cuantificar los efectos a mediano plazo del cambio climático en las zonas costeras en Guerrero, México”.
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Gío-Argaez, F.R., Gómez-Espinosa, C., Flores-de-Bois, L.A., Cruz-Flores, D., Salgado-Souto, S. (2019). Composition of the Pliocene Meiofauna from Punta Maldonado Formation, Guerrero (Mexico). In: Boughdiri, M., Bádenas, B., Selden, P., Jaillard, E., Bengtson, P., Granier, B. (eds) Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01452-0_34
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DOI: https://doi.org/10.1007/978-3-030-01452-0_34
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