Punctuated equilibrium is commonly contrasted against the theory of phyletic gradualism, which states that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). (religion.blogs.cnn.com)
Punctuated equilibrium is usually compared and contrasted with the theory of phyletic gradualism that holds that evolution occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). (fossilmuseum.net)
As the late Harvard evolutionary biologist Ernst Mayr concluded: «Nothing demonstrates the improbability of the origin of high intelligence better than the millions of phyletic lineages that failed to achieve it.» (scientificamerican.com)