Figure 10. Major vertebrate groups through time, based on proportion of the identifiable samples for each biostratigraphic survey level (NISPV, N=1877; Table 1 and Table 4), arranged from oldest to youngest, left to right.  A single bird occurrence on ML06 is not plotted.  KL03 is unusual for its large number of records of Chelonia, including many remains of the family Trionychidae.