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Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765

Abstract

UTIDA, Giselle; PETRI, Setembrino; OLIVEIRA, Emiliano C.  and  BOGGIANI, Paulo C.. Microfossils in micrites from Serra da Bodoquena (MS), Brazil: taxonomy and paleoenvironmental implications. An. Acad. Bras. Ciênc. [online]. 2012, vol.84, n.2, pp.245-262.  Epub Apr 12, 2012. ISSN 0001-3765.  https://doi.org/10.1590/S0001-37652012005000019.

Microfossils present in Quaternary micrites from Serra da Bodoquena, Mato Grosso do Sul State, Brazil, are here described for the first time. The studied taxa are: a) ostracods: Candona sp., Candonopsis sp., Cyclocypris sp., Cypria sp., Cypridopsis sp., Notodromas sp., Ilyocypris sp., Cyprideis sp., Wolburgiopsis cf. chinamuertensis (Musacchio 1970), Darwinula sp. and 5 morphotypes; b) microgastropod Acrobis sp., and c) Characeae remains and gyrogonites Chara sp.. The presence of these microfossils suggests clear-water shallow lacustrine paleoenvironments and the presence of aquatic vegetation. Similarities between microfossils and the living taxa suggest possible Holocene ages for these deposits, which is in accordance with previous C14 dates.

Keywords : micrite; Characeae; lacustrine sediments; Ostracoda; Serra da Bodoquena.

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