Punctuated Equilibrium

Punctuated Equilibrium is a theory according to which when a species appears in the fossil records, its population would become stable, showing little evolutionary changes for most of its geographical history. According to a new study, this theory is attributed to crocodiles’ slow rate of evolution. The rare occasions of rapid evolution of these animals as well as their increased body size are due to warm climate. Warm climate during the age of dinosaurs is the reason behind large of varieties of crocodiles during that time.