Molecular clocks are not as bad as you think.
Fitch
W M
WM
Department of Ecology and Evolutionary Biology, University of California at Irvine 92717.
Ayala
F J
FJ
D000818:Animals; D001683:Biological Clocks; D005075:Biological Evolution; D006801:Humans; D008957:Models, Genetic; D008967:Molecular Biology / Q000379:methods*; D009154:Mutation; D013482:Superoxide Dismutase / Q000502:physiology
D013482:Superoxide Dismutase