georefid:2011-019176SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-07-06T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2011-019176<gco:CharacterString>A new calcareous nannofossil species of the genus Sphenolithus from the middle Eocene (Lutetian) and its biostratigraphic significance</gco:CharacterString>2010-01-01publicationgeorefid:2011-019176Shamrock, Jamie L.University of Nebraska-Lincoln, Geosciences Department, Lincoln, NE, United StatesauthorInternational Nannoplankton Association, The Hague, InternationalpublisherdocumentHardcopyJournal of Nannoplankton Research31 (1)5-10A high-resolution biostratigraphic study of Eocene calcareous nannofossils from Ocean Drilling Program (ODP) Leg 122 Hole 762C (Exmouth Plateau, western Australian shelf) has identified a new nannofossil species, Sphenolithus perpendicularis sp. nov. This species bears a double apical spine, similar to both S. furcatolithoides and S. capricornutus, but is distinguished by both optical properties and stratigraphic range. The range and distribution of S. perpendicularis sp. nov. is limited to nannofossil zone CP13a (equivalent to NP15a) at Hole 762C, and verified in sediments from Deep Sea Drilling Project Leg 77 Hole 538A and ODP Leg 159 Hole 960A. This suggests both a global distribution and a reasonably synchronous stratigraphic range. The optical properties and stratigraphic range of S. perpendicularis sp. nov. may suggest a taxonomic relationship to the S. anarrhopus-editus-spiniger lineage. This new species, in conjunction with S. furcatolithoides and S. cuniculus, may provide an alternate means for subdividing nannofossil zone CP13 (NP15).completedPaleobotanyalgaeAtlantic OceanbiostratigraphyCenozoicDeep Sea Drilling ProjectDSDP Site 538EoceneEquatorial AtlanticExmouth PlateauGulf of MexicoIndian OceanIPODLeg 122Leg 159Leg 77LutetianmicrofossilsmorphologynannofossilsNorth AtlanticOcean Drilling ProgramODP Site 762ODP Site 960PaleogenePlantaeSphenolithusSphenolithus perpendicularistaxonomyTertiaryurn:org.iodp:exp:122urnlargerWorkCitationcampaignurn:org.iodp:exp:159urnlargerWorkCitationcampaignurn:org.iodp:exp:77urnlargerWorkCitationcampaignurn:org.iodp:exp:77:site:538urnlargerWorkCitationstudyurn:org.iodp:exp:77urnlargerWorkCitationcampaignurn:org.iodp:exp:122:site:762urnlargerWorkCitationstudyurn:org.iodp:exp:122urnlargerWorkCitationcampaignurn:org.iodp:exp:159:site:960urnlargerWorkCitationstudyurn:org.iodp:exp:159urnlargerWorkCitationcampaignEnglishgeoscientificInformation-85.2738112.1515-19.531523.5059Includes appendix