Figure 3.11   Is the fossil record controlled by the rock record? (a) Plot of number of marine geological formations and extinction rate against the last 500 myr of geological time. Note how closely the rock and fossil curves follow each other. (b) Plot of diversifi cation curves for marine families of animals from analyses by Sepkoski (i) and Benton (ii), compared with (iii) the sea-level curve for the Phanerozoic (fi ne line) and the percentage of platform fl ooding (heavy line). Note the approximate matching of diversity and sea-level curves until the past 100 myr. (a, based on Peters & Foote 2002; b, based on Smith 2001.)

← Back