Percent
	| 
     15	+
	|       o    o    o    o         o    o
	|                           o              o
	|                                               o
	|
     10	+
	|
	|
	|
	|
      5	+
	|
	|
	|
	|
      0	+
	      1987 1988 1989 1990 1991 1992 1993 1994 1995

                                  Year

Figure 1. Publications indexed under Paleobotany or Palynology, as a percentage of publications indexed under Botany in BIOSIS. See Table 1.