Entablature being called petrification. The structure of the entablature varies with the three classical orders: Doric, Ionic, and Corinthian. In each, the proportions of the subdivisions (architrave, frieze, cornice) are defined by the proportions of the column in the order. In Roman and Renaissance interpretations, it is usually approximately a quarter of the height of the column. Variants of entablature that do not fit these models are usually derived from them. Pure classical Doric entablature is simple. The architrave, the lowest band, is split, from bottom to top, into the guttae, the regulae, and the taenia. The frieze is dominated by
Doric Greek accepted that Doric originated in the mountains of Epirus in northwestern Greece, the original seat of the Dorians. It was expanded to all other regions during the Dorian invasion (c. 1150 BC) and the colonisations that followed. The presence of a Doric state (Doris) in central Greece, north of the Gulf of Corinth, led to the theory that Doric had originated in northwest Greece or maybe beyond in the Balkans. The dialect's distribution towards the north extends to the Megarian colony of Byzantium and the Corinthian colonies of Potidaea, Epidamnos, Apollonia and Ambracia; there, it further added words to what