Late Cretaceous ostracods recorded from ODP Hole 113-689B ...
Twenty-six deep-sea ostracod species are described from the late Campanian to late Maastrichtian of ODP Site 689 in the Southern Ocean. Three are described as new: Cytherelloidea megaspirocostata, Agulhasina sudoceanica and Pennyella foveolata. Correspondence analysis identified three faunal sample...
| Main Authors: | , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA - Publishing Network for Geoscientific and Environmental Data
1998
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| Online Access: | https://dx.doi.org/10.15468/9mf5gs https://www.gbif.org/dataset/7d3a56b4-f762-11e1-a439-00145eb45e9a |
| Summary: | Twenty-six deep-sea ostracod species are described from the late Campanian to late Maastrichtian of ODP Site 689 in the Southern Ocean. Three are described as new: Cytherelloidea megaspirocostata, Agulhasina sudoceanica and Pennyella foveolata. Correspondence analysis identified three faunal sample groups. The first is mainly characterised by A. sudoceanica, Kirthe sp. and Cytherella sp. This is replaced, first temporarily (between c. 71 and 69 Ma) by a group mainly characterised by Argilloecia spp. and C. megaspirocostata, possibly a consequence of a short-lived global palaeoceanographic event marked by increased ventilation and cooling of intermediate waters at site 689. It then reappears before finally being replaced by a third group largely characterised by Eucythere cf. circumcostata, P. foveolataand Dutoitella mimica Dingle. This final change is coeval with a marked increase in the faunal density of ostracods, probably owing to an increase in food supply. However, the oxygen isotopic records of ... |
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