English: The structure of evolutionary biology and its relationship to other biological disciplines. The history and causes of evolution (center) are the subject of the various subdisciplines of evolutionary biology (inner ring), which grade into one another and, as shown by the arrows, are related both to one another and to other disciplines (outer ring). The areas of the segments in the diagram convey an impression of the historical contributions of the subdisciplines to the literature of evolutionary biology. (Clickable map located here.).