Palaeoceanographical events from the late Miocene to Pleistocene of the Rio Grande Rise (south-western Atlantic) as indicated by Ostracoda

Bergue, Cristianini Trescastro; Brandão, Simone N.; Zerfass, Geise de Santana dos Anjos

doi:10.1080/14772019.2018.1536895

Cited by 5 publications

(3 citation statements)

References 73 publications

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“…Rugocythereis horrida (Whatley and Coles 1987) and Macrosarisa bensoni Maddocks 1990 occur continuously throughout the core. Ostracods species with continual occurrence are not uncommon in the fossil record as demonstrated by Bradleya majorani Bergue et al 2019, in the Rio Grande Rise and Paracypris polita Sars 1866 in the Mediterranean (Pirkenseer et al 2018). Probably, taxa with continual occurrence are physiologically less influenced by the OMZ and thermocline depth changes, that triggers upslope/downslope migrations (Rodriguez-Lazaro and Cronin 1999).…”

Section: Discussionmentioning

confidence: 99%

“…• Pandemic Group, composed of species registered in several deep-sea regions worldwide; (Bergue and Coimbra 2008) and Microcythere acuminata Bergue et al 2019, for instance. The four new species herein described probably belong to this group, but only additional studies will allow this hypothesis to be tested.…”

Section: Assemblage Compositionmentioning

confidence: 99%

“…Swanson et al (2005) proposed the genus Inversacytherella to accommodate cytherellids with a reverse overlap pattern (i.e., LV > RV) and unusual AMS composed of over 20 individual scars. Fossil Inversacytherella species were registered in Brazil by Bergue et al (2007Bergue et al ( , 2019 and Manica et al (2015). Although AMS of Cytherella pindoramensis sp.…”

Section: Assemblage Compositionmentioning

confidence: 99%

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Climatically induced changes in late Quaternary bathyal ostracod assemblages of the Camamu Basin, Brazil

et al. 2021

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Bathybic ostracods (i.e., bathyal and abyssal assemblages) are important indicators of temperature and productivity changes of Cenozoic marine ecosystems. The present work presents the first study on Quaternary ostracods of the Camamu Basin, off the state of Bahia, northeastern Brazilian continental margin. The analysis of 59 samples from the piston-core CMU 14 (14°24'S, 38°49'W; 965 m water depth), revealed rich and abundant assemblages. The 14 C accelerator mass spectrometry (AMS) dating indicates that the studied interval covers the last 108 kyr, corresponding to the oxygen stable isotope stages (MIS) 5 to 1. Comparison with data from previous publications allowed discernment of three groups of ostracod species in CMU 14: Pandemic Group of species registered in more than one oceanic basin; Atlantic/Mediterranean Group of species restricted to the Atlantic Ocean and Mediterranean; and Brazilian Group of species restricted to the Brazilian continental margin). Four new species are herein proposed: Cytherella pindoramensis sp. nov., Ambocythere amadoi sp. nov., Pseudobosquetina pucketti sp. nov., and Bythoceratina bonaterrae sp. nov. Ostracod occurrences reveal the influence of glacial/interglacial cycles on assemblages composition. Interglacial stages 5 and 1 in the Camamu Basin are characterized by the association Bythocypris affinis-Cytherella pindoramensis sp. nov.-Cytheropteron perlaria-Bradleya dictyon; glacial stages (i.e., 2 to 4) register decreased diversity, possibly due to lower oceanic productivity.

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Section: Discussionmentioning

confidence: 99%

Section: Assemblage Compositionmentioning

confidence: 99%