Figure 4.

Per capita rates of beetle family diversification. (a) Rate of net family-level diversification for all beetle families within 25 Myr intervals. Solid green line shows median rate from 1000 pseudoreplicate analyses, and surrounding green envelope indicates 95% CIs. (b) Rate of net family-level diversification for Polyphaga (purple, upper line) and non-polyphagan suborders (orange, lower line) within 25 Myr intervals. (c) Per capita rate of family origination for Polyphaga (purple, upper line) and non-polyphagan suborders (orange, lower line) within 25 Myr intervals. (d) Per capita rate of family extinction for Polyphaga (purple, lower line) and non-polyphagan suborders (orange, upper line) within 25 Myr intervals. Note that there are no known extinct families within Polyphaga, so their extinction rate is 0.0 throughout. (Online version in colour.)