Initial Reports. Volume 199				
Ms 199-114				
Chapter 14, Table T8. Nannofossil, foraminifer, and radiolarian events, Site 1221.				

Notes: T = top, B = base. * = age estimate in need of revision; event occurs 1.38 m above the P/E boundary (199-1221B-11X-3, 91 cm). ** = control point for LSR calculations in Figure F10.				

Marker species/Zonal boundaries		Age (Ma)	Midpoint (mcd)	plus/minus (m)
Nannofossil events:				
T Reticulofenestra umbilicus greater than or equal to 14 9 micrometer**		31.7**	2.66**	0.19
T Ericsonia formosa		32.9	6.74	0.6
T Fascicultihus spp.*		54.1**	152.94**	0.06
T Ericsonia robusta		55.9	155.27	0.16
B Discoaster multiradiatus**		56.2**	155.65**	0.07
B Discoaster nobilis		56.5	155.65	0.07

Marker species/Zonal boundaries		Age (Ma)	Midpoint (mcd)	plus/minus (m)
Foraminifer events:				
Benthic extinction event		55	154.31	0.01

Marker species/Zonal boundaries		Age (Ma)	Midpoint (mcd)	plus/minus (m)
Radiolarian events:				
RP20/19		33.47	6.29	0.40
RP19/18		34.77	7.71	0.32
RP18/17		36.96	19.51	0.20
RP17/16		38.12	23.59	0.75
RP16/15		40.12	35.89	0.56
RP15/14		41.39	52.08	0.75
RP14/13**		43.30	66.33**	1.00**
RP13/12**		44.48	77.56**	0.73
RP12/11**		45.89	104.08**	0.75
RP8/7		52.22	127.86	13.16