We investigated benthic foraminiferal assemblages from Sites 1218 and 1219, Ocean Drilling Program Leg 199, to understand the abyssal response of the eastern equatorial Pacific to the Oligocene climate. Globocassidulina subglobosa, Oridorsalis umbonatus, Gyroidinoides spp., Cibicidoides spp., and Pullenia spp. are common in the lower Oligocene, whereas Nuttallides umbonifer, a dominant species in carbonate corrosive deep water, often dominates the upper Oligocene assemblage at both sites.
1Takata, H., and Nomura, R., 2005. Data report: Oligocene benthic foraminifers from the eastern equatorial Pacific, Sites 1218 and 1219, ODP Leg 199. In Wilson, P.A., Lyle, M., and Firth, J.V. (Eds.), Proc. ODP, Sci. Results,199: College Station, TX (Ocean Drilling Program), 1–26. doi:10.2973/odp.proc.sr.199.224.2006
2Research Center for Coastal Lagoon Environments, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan. yuu@soc.shimane-u.ac.jp
3Foraminiferal Laboratory, Faculty of Education, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan.
Initial receipt: 1 July 2004
Acceptance: 14 March 2004
Web publication:
22 June 2005
Ms 199SR-224