The study of distributions of evolutionary rates was initiated by Simpson (1944) and has later been pursued by the same author (1953) and others. The main interest has been directed towards taxonomic rates of evolution, which were studied on the basis of survival data for taxa on the genus or species level. The following conclusions may be cited:
No takes yet. Share an insight, caveat, or question.
Björn Kurtén (1959) studied this question.