Press to Close

Figure 9. Total bryozoan (cyclostome plus cheilostome) generic originations by stage. A, B. Originations per million years. C, D. Originations per standing diversity. E, F. Originations per standing diversities per million years. Graphs on the left do not include genera known only from a single stage, and those on the right do include stage-only genera. Error bars represent 95% confidence intervals.