georefid:2008-028064georefid:2008-028062SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1016/j.revmic.2006.10.0052006-01-01publicationgeorefid:2008-028064doi:10.1016/j.revmic.2006.10.005Guernet, ClaudeUniversite Pierre et Marie Curie-Paris VI, Laboratoire de Biomineralisations et Paleoenvironnements, Paris, FranceauthorDanelian, TanielauthorElsevier, Paris, FrancepublisherdocumentHardcopyIn: Erbacher, Jochen (editor), Danelian, Taniel (editor), Nishi, Hiroshi (editor), Demerara Rise (ODP Leg 207); equatorial Cretaceous and Palaeogene stratigraphy and palaeoceanography; Part II49 (4)215-225Ostracode faunal assemblages which lived in bathyal environments are analysed from uppermost Maastrichtian-middle Eocene sediments of sites 1260 and 1261, drilled on the distal margin of Demerara, off Surinam (Leg 207, western tropical Atlantic). As for numerous other groups, the Cretaceous/Tertiary mass extinction event led to the disappearance of numerous bathyal ostracode species and it was followed by a very slow recovery during the Palaeocene. It appears that this extinction event was more devastating for detritus-feeder ostracode species than for filter or silt-eater groups, which crossed the K/T boundary without any or little morphological change. This extinction selectivity may be explained by the drop in productivity of surface waters which took place at the K/T boundary. Finally, psychrospheric ostracode species were encountered in Middle Eocene sediments, confirming thus the general cooling of deep oceanic realm recognised in general for this time interval.completedInvertebrate paleontologyArthropodaAtlantic Oceanbenthic taxaCenozoicCretaceousCrustaceaDemerara RiseEoceneEquatorial Atlanticfaunal listfaunal studiesInvertebrataK-T boundaryLeg 207lithostratigraphylower PaleoceneMaestrichtianMandibulatamarine environmentmass extinctionsMesozoicmicrofossilsmorphologyNorth AtlanticNorthwest AtlanticOcean Drilling ProgramODP Site 1260ODP Site 1261OstracodaPaleocenepaleoenvironmentPaleogeneSenonianstratigraphic boundarytaxonomyTertiaryUpper Cretaceousurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1260urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignurn:org.iodp:exp:207:site:1261urnlargerWorkCitationstudyurn:org.iodp:exp:207urnlargerWorkCitationcampaignFrenchgeoscientificInformation-54.3300-54.19009.03009.1600