First record of oligocene conchostracans (Tremembé formation, Taubaté Basin) from São Paulo, Brazil

Gallego, Oscar Florencio; Mesquita, Marisa Vianna

doi:10.1016/s0895-9811(00)00048-1

Cited by 12 publications

(14 citation statements)

References 6 publications

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“…Sample 8 dates from the Cretaceous period ( ca . 85 Ma), and samples 9 and 10 are from the Oligo‐Miocene period (23 Ma, Gallego and Mesquita ). Sample 10 was analysed by ICP‐OES to obtain complementary quantitative data for selected elements.…”

Section: Methodsmentioning

confidence: 99%

Application of Laser‐Induced Breakdown Spectroscopy and Hyperspectral Images for Direct Evaluation of Chemical Elemental Profiles of Coprolites

Sperança

Aquino

Fernandes

et al. 2016

Geostandard Geoanalytic Res

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This study demonstrates the application of laser‐induced breakdown spectroscopy (LIBS) and hyperspectral imaging to the investigation of coprolite and fossil samples. Solid samples from the Permian (seven coprolites and one fossil), Cretaceous (one coprolite) and Oligo‐Miocene (two coprolites) periods were directly analysed, and emission spectra from 186 to 1042 nm were obtained in several areas covering coprolite/fossil and rock material. Initial exploratory analyses were performed using principal component analysis with the data set normalised by the norm (Euclidean norm = 1). After identification and selection of emission lines of eleven elements (Al, Ca, Cr, Fe, K, Mg, Mn, Na, Ni, P and Si), the signals were normalised again by the relative intensity of the selected element. Phosphorus was identified mainly in the coprolites, while K and Na were primarily found in the rock material. In several cases, there was a positive correlation between Ca and P. A sample from the Oligo‐Miocene series was also analysed using inductively coupled plasma‐optical emission spectrometry (ICP‐OES) (rock and coprolites were analysed separately). Based on the quantitative results from ICP‐OES, it was confirmed that the tendency was the same as that observed with the results obtained from LIBS directly in the solid sample.

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Section: Methodsmentioning

confidence: 99%

Application of Laser‐Induced Breakdown Spectroscopy and Hyperspectral Images for Direct Evaluation of Chemical Elemental Profiles of Coprolites

Sperança

Aquino

Fernandes

et al. 2016

Geostandard Geoanalytic Res

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“…The world record of Cenozoic fossil spinicaudatans is limited to only a few countries: China, with many localities ranging from the late Palaeocene to the early Eocene (Hong et al . 1974; Chen 1975; Chen & Shen 1979, 1980, 1981, 1985; Shen & Chen 1979; Shen & Zhang 1979); Mongolia (late Palaeocene to early Eocene: Trusova & Badamgarav 1976); Brazil (Oligocene: Gallego & Mesquita 2000); Argentina (late Palaeocene and Miocene–Pliocene: Gallego & Mesquita 2000; Petrulevicius 2001) and North America (Eocene: Shen et al . 2006; early Oligocene: Stigall et al 2017) (see Table 1).…”

Section: Spinicaudatamentioning

confidence: 99%

“…In South America there are three ‘conchostracan'-bearing formations. Tremembeglypta saadi Gallego (in Gallego & Mesquita 2000) has been reported from the Oligocene Tremembé Formation of the Taubaté Group, São Paulo State, Brazil. Petrulevicius (2001) mentioned ‘conchostracans' ( Euestheria ?)…”

Section: Cenozoic ‘Conchostracan' Distributionmentioning

confidence: 99%

“…in the Maíz Gordo Formation (late Paleocene) of Salta Province, Argentina. Neogene ‘conchostracans' in the Upper Member of the San Roque Formation from San Luis, Argentina, represent two taxa probably belonging to the Fushunograptidae and Loxomegaglyptidae (Gallego & Mesquita 2000). New geological studies of these lithostratigraphic units tentatively changed previous interpretation on the assignation to the San Roque Formation, but new studies are necessary to obtain more accurate data (Rivarola et al .…”

Section: Cenozoic ‘Conchostracan' Distributionmentioning

confidence: 99%

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The Crustacea of the Insect Bed (latest Eocene) of the Isle of Wight, England, including the first spinicaudatan (clam shrimp) from the British Cenozoic

Gallego

Shen²,

Jarzembowski³

et al. 2019

Earth and Environmental Science Transactions of the Royal Socie

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The crustacean fauna of the Insect Bed (late Eocene), Isle of Wight is reviewed. The fauna comprises the branchiopod Branchipodites vectensis Woodward, 1879, ostracod Potamocypris brodiei Jones and Sherborn, 1889, and isopod Eosphaeroma margarum (Desmarest, 1822). In addition a new clam shrimp (Crustacea: Diplostraca: Spinicaudata) is described and named Paraleptestheria mitchelli sp. nov. This is the first record of the genus outside China and the first ‘conchostracan' to be described from the European Cenozoic.

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“…On the other hand, Martins- Neto (1989) claims that the presence of larvae of Trichoptera, and palemonid crustaceans are evidences that the waters of the Tremembé Paleolake were not stagnant. Gallego & Mesquita (2000) ascribe the low diversity and abundance of conchostracans in the Tremembé Formation either to the predatory pressure by fishes, or to environmental restrictions in chemical parameters. Due to their sensitiveness to ecological parameters at the water-sediment interface, and high fossilization potential, ostracods provide invaluable data for paleoenvironmental reconstruction of lacustrine environments.…”

Section: Paleolimnological Remarksmentioning

confidence: 99%

New Oligocene Cyprididae species (Crustacea, Ostracoda) from the Tremembé Formation, Taubaté Basin, Brazil, and their paleolimnological significance

Bergue¹,

Ramos²,

Maranhão³

2018

Rev. bras. paleontol.

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Two new Oligocene ostracod species, Eucypris lobatoi sp. nov. and Potamocypris taubatensis sp. nov., are herein proposed. This is the first fossil record of these genera in Brazil, and the species identified occur in two distinct phases of the Tremembé Paleolake. It is assumed that Eucypris lobatoi sp. nov. has lived in the oldest and more stable phase of the lake, Potamocypris taubatensis sp. nov., in the youngest and more unstable phase. These data support a previous ostracod-based paleolimnological interpretation which sustains a shallowing trend in the paleolake during the final deposition of the Tremembé Formation.

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First record of oligocene conchostracans (Tremembé formation, Taubaté Basin) from São Paulo, Brazil

Cited by 12 publications

References 6 publications

Application of Laser‐Induced Breakdown Spectroscopy and Hyperspectral Images for Direct Evaluation of Chemical Elemental Profiles of Coprolites

Application of Laser‐Induced Breakdown Spectroscopy and Hyperspectral Images for Direct Evaluation of Chemical Elemental Profiles of Coprolites

The Crustacea of the Insect Bed (latest Eocene) of the Isle of Wight, England, including the first spinicaudatan (clam shrimp) from the British Cenozoic

New Oligocene Cyprididae species (Crustacea, Ostracoda) from the Tremembé Formation, Taubaté Basin, Brazil, and their paleolimnological significance

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