A sparse, predominantly benthic foraminiferal assemblage extracted from the lower volcaniclastic interval on the Koko Seamount, Leg 197 Hole 1206A, indicates an early to middle Eocene age and, in general, a middle to upper bathyal paleobathymetry (400-1000 m). The very rare occurrence of poorly preserved planktonic foraminifers tends to support this biostratigraphic interpretation, which is based primarily on benthic foraminifers.

Abundance estimates as follows: A = abundant (>25 specimens), C = common (15-25 specimens), F = frequent (7-10 specimens), R = rare (4-6 specimens), VR = very rare (2-3 specimens). Faunal change at sample 197-1206A-30R-4,92-94.

Supplement to: Bordine, Burton W; Wilson, Linda A; Siesser, William G (2005): Data report: Eocene foraminifers, biostratigraphy, and paleobathymetry, Leg 197 Hole 1206A, North Central Pacific Ocean. In: Duncan, RA; Tarduno, JA; Davies, TA; Scholl, DW (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 197, 1-4