Figure 7. Depth ranges of key Pliocene-Quaternary planktonic foraminiferal zonal species and other stratigraphically useful taxa in ODP Hole 1020B, California margin. California margin (CM) planktonic foraminiferal zones shown at left. Dashed lines represent range extensions that are based on rare specimens.

Figure 7. Depth ranges of key Pliocene-Quaternary planktonic foraminiferal zonal species and other stratigraphically useful taxa in ODP Hole 1020B, California margin. California margin (CM) planktonic foraminiferal zones shown at left. Dashed lines represent range extensions that are based on rare specimens.