S1:          Palaeobotany is the study of fossil plants preserved in rocks dating back in millions of years. P :           Records of the history of the world are contained in fossils. Q :          Through the ages, plants have evolved from simple to more complex forms. R :          First there were water plants then land plants appeared during the Paleozoic era. S :           But since the fossil remains appear locked in rock layers, they are closely related to the geologist area of investigation. S6:          The fossil plants indicate the age of the rock, and also point to facts regarding climate, temperature and topography. The Proper sequence should be: