The biostratigraphic distribution and abundance of lower Oligocene and Miocene to Pleistocene silicoflagellates are documented from Ocean Drilling Program Leg 183 Holes 1138A and 1140A, on the Kerguelen Plateau. The Distephanus speculum speculum forma pseudofibula plexus is found in the upper Miocene in Hole 1138A, but other important biostratigraphic markers are not available. Diversity and abundance of silicoflagellates vary considerably in Hole 1138A, with silicoflagellates more abundant in the Pliocene and Pleistocene and some intervals of the Miocene barren of silicoflagellates or containing only limited numbers of specimens. The silicoflagellates of Hole 1140A include a new skeletal morphology, described here as Distephanus speculum speculum forma cylindrus. Silicoflagellates were generally abundant throughout the lower and middle Miocene in Hole 1140A.
1McCartney, K., Engel, R., Reed, T., Williamson, R., Bohaty, S.M., and Wise, S.W., Jr., 2003. Silicoflagellates from ODP Holes 1138A and 1140A, Kerguelen Plateau. In Frey, F.A., Coffin, M.F., Wallace, P.J., and Quilty, P.G. (Eds.), Proc. ODP, Sci. Results, 183 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/183_SR/011/011.htm>. [Cited YYYY-MM-DD]
2Micropaleontology Undergraduate Research Laboratory, 181 Main Street, University of Maine at Presque Isle, Presque Isle ME 04769, USA. Correspondence author: mccartnk@polaris.umpi.maine.edu
3Earth Sciences Department, 1156 High Street, Earth and Marine Sciences Building, University of California, Santa Cruz, Santa Cruz CA 95064, USA.
4Department of Geological Sciences, 4100, Florida State University, Tallahassee FL 32306, USA.
Initial receipt: 2 February 2002
Acceptance: 8 March 2003
Web publication:
28 May 2003
Ms 183SR-011