georefid:2005-048151SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1130/G21566.1<gco:CharacterString>Selective calcareous nannoplankton survivorship at the Cretaceous-Tertiary boundary</gco:CharacterString>2005-01-01publicationgeorefid:2005-048151doi:10.1130/G21566.1Bown, Paul R.University College London, Department of Earth Sciences, London, United KingdomauthorGeological Society of America (GSA), Boulder, CO, United StatespublisherdocumentHardcopyGeology (Boulder)33 (8)653-656Calcareous nannoplankton underwent devastating diversity loss at the Cretaceous- Tertiary boundary (65.5 Ma), but recovered rapidly in the early Paleocene from a small number of survivor species. An understanding of this survivorship has been hampered by uncertainties introduced by reworking and mixing, but new high-resolution assemblage data from the northwest Pacific (Shatsky Rise, Ocean Drilling Program Site 1210) allow the unequivocal identification of 10 survivors. Evidence of shared adaptive strategies among these species provides the first indication that the extinctions were selective, with survival limited to a few neritic and/or opportunistic species, probably facilitated by hardiness and/or life-cycle escape strategies.completedStratigraphyadaptationalgaeassemblagesCenozoiccoresCretaceousextinctionK-T boundaryLeg 198lower PaleoceneMesozoicmicrofossilsnannofossilsnatural selectionNorth PacificNorthwest PacificOcean Drilling ProgramODP Site 1210Pacific OceanPaleocenepaleoecologyPaleogenePlantaeShatsky Risestratigraphic boundaryTertiaryUpper CretaceousWest Pacificurn:org.iodp:exp:198urnlargerWorkCitationcampaignurn:org.iodp:exp:198:site:1210urnlargerWorkCitationstudyurn:org.iodp:exp:198urnlargerWorkCitationcampaignEnglishgeoscientificInformation158.1600158.160032.130032.1300