"During the Kretase in the Northern Hemisphere, scleropyllus plants of the forest zone began to develop at the border of the tropical and temperate flora and also as an ancestor of them. The Scleropyllus plants had adapted to the Mediterranean climate which was developed in Pleistosen time. Today this vegetation is called as Maquis in Turkey. Although Pinus brutia and Pinus Halepenis are accepted as different forest tree species of the Mediterranean Region, they possibly originated from the same ancestor. In the geological development process, P.halepenis became dominant in the western while P.brutia in the eastern part of the Mediterranean Region."--P. 9.