Bak-Sneppen 1993 self-organized-criticality model of macroevolution; lowest-fitness species + neighbors mutated at each step; produces power-law extinction sizes; toy model of punctuated equilibrium.
Bak-Sneppen 1993 self-organized-criticality model of macroevolution; lowest-fitness species + neighbors mutated at each step; produces power-law extinction sizes; toy model of punctuated equilibrium.