• According to the concept of transformational evolution, first clearly articulated by Lamarck, evolution consists of the gradual transformation of organisms from one condition of existence to another.

    "The Dynamics of Evolution: The Punctuated Equilibrium Debate in the Natural and Social Sciences". Book by Albert Somit and Steven Peterson, p. 21-48, "Speciational Evolution or Punctuated Equilibria", 1992.