Kamikuri, Shin-ichi; Moore, Theodore C.; Ogane, Kaoru; Suzuki, Noritoshi; Palike, Heiko; Nishi, Hiroshi (2012): Early to early Miocene radiolarian biostratigraphy for the low-latitude Pacific Ocean. Micropaleontology Press, New York, NY, United States, Stratigraphy, 9 (1), 77-108, georefid:2013-020744

Abstract:
A total of 226 early Eocene to early Miocene radiolarian datum events are identified and correlated with the geochronologic time scale at Sites U1331, U1332, and U1333 in the equatorial Pacific Ocean. Seven new radiolarian subzones are proposed for the low-latitude Oligocene: Eucyrtidium diaphanes Interval Subzone (RP22b); Calocycletta (Calocycletta) robusta Interval Subzone (RP22a); Lychnocanoma apodora Interval Subzone (RP21b); Theocyrtis annosa Interval Subzone (RP21a); Eucyrtidium plesiodiaphanes Interval Subzone (RP20c); Dorcadospyris pseudopapilio Interval Subzone (RP20b); Lithocyclia angusta Interval Subzone (RP20a). These subzones significantly improve the biostratigraphic resolution within the Oligocene (an average of one subzone per 1.6 million years [my]). Our study corroborates previous studies, which inferred that primary Oligocene datums were synchronous in the low-latitude Pacific. Four Eocene zones, Cryptocarpium ornatum (RP19), Calocyclas bandyca (RP18), Phormocyrtis striata striata (RP9), and Buryella clinata (RP8) are emended. Two new species/subspecies, Lychnocanoma klausi and Theocorys anaclasta clasta, are described.
Coverage:
West: -142.0942 East: -138.2510 North: 12.0405 South: 10.3105
Relations:
Expedition: 320
Site: 320-U1331
Site: 320-U1332
Site: 320-U1333
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2013-020744 (c.f. for more detailed metadata)
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