Microfossils in micrites from Serra da Bodoquena (MS), Brazil: taxonomy and paleoenvironmental implications
Document title: Microfossils in micrites from Serra da Bodoquena (MS), Brazil: taxonomy and paleoenvironmental implications
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000357050
ISSN: 0001-3765
Authors: 1
1
1
1
Institutions: 1Universidade de Sao Paulo, Instituto de Geociencias, Sao Paulo. Brasil
Year:
Season: Jun
Volumen: 84
Number: 2
Pages: 245-261
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract 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
Portuguese abstract Diversos microfósseis provenientes de micritos quaternários da Serra da Bodoquena, estado de Mato Grosso do Sul, Brasil são aqui descritos pela primeira vez. Os taxa descritos são os seguintes: a) ostracodes: Candona sp., Candonopsis sp., Cyclocypris sp., Cypria sp., Cypridopsis sp., Notodromas sp., Ilyocypris sp., Cyprideis sp., Wolburgiopsis cf. chinamuertensis (Musacchio 1970), Darwinula sp. e 5 morfotipos; b) microgastrópode Acrobis sp., e c) restos de Characeae e girogonites de Chara sp.. A presença destes microfósseis sugere paleoambiente lacustre raso de águas límpidas e presença de vegetação aquática. As semelhanças dos microfóssseis com taxa viventes sugerem idades possivelmente holocênicas para estes depósitos, concordando com datações prévias por C14
Disciplines: Biología
Keyword: Paleontología,
Microfósiles,
Nuevos registros,
Sedimentos lacustres,
Ostracoda,
Characeae,
Cuaternario,
Brasil,
Paleoambiente
Keyword: Biology,
Paleontology,
Microfossils,
New records,
Lacustrine sediments,
Ostracoda,
Characeae,
Paleoenvironments,
Quaternary,
Brazil
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