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
Darwin’s theory (a) predicts that fossil transitions between different types of organisms will be found. When transitions were not found, evolutionists proposed punctuated equilibrium (b), where the transitional forms existed briefly, and were not fossilized. Model (C) represents the fossil record with regards to the origin of the phyla. The sudden appearance of organisms points to design, not evolution.