Silicoflagellates ranging from middle Eocene to middle Miocene in age are present in Ocean Drilling Program Hole 1219A. The hole was drilled 250.8 meters below seafloor of which an ~120-m section primarily composed of nannofossil ooze with variable radiolarian and clay content is early Miocene and Oligocene in age, and a 95-m section is Eocene radiolarian and zeolithic clays, radiolarian and diatom oozes, and nannofossil oozes and chalks. A total of 150 samples were studied at a sample interval of one per section. Diversity of silicoflagellates is moderate, and the preservation is good. Abundance is generally low, with many samples barren of silicoflagellates, but 31 species and subspecies were identified. One new species, Naviculopsis trigeminus, is described.
1Engel, R., and McCartney, K., 2005. Silicoflagellates recovered from the deep sea, ODP Leg 199 Site 1219, east equatorial Pacific. In Wilson, P.A., Lyle, M., and Firth, J.V. (Eds.), Proc. ODP, Sci. Results,199: College Station, TX (Ocean Drilling Program), 1–29. doi:10.2973/odp.proc.sr.199.204.2005
2Micropaleontology Undergraduate Research Laboratory, University of Maine at Presque Isle, Presque Isle ME 04769, USA. Correspondence author: mccartnk@umpi.maine.edu
Initial receipt: 29 August 2003
Acceptance: 30 August 2004
Web publication:
6 April 2005
Ms 199SR-202