The shifting biogeography of reef corals during the Oxfordian (Late Jurassic). A climatic control

摘要: Until recently, the Jurassic was thought to have been a period characterised by predominantly warm and equable climate. During Oxfordian (a time span of six million years in Late Jurassic) distribution tropical coral reefs limited about 35°N near 25°S. However, Middle time, were abundant only at higher latitudes almost entirely missing equator. that area maximum reef development had shifted poleward belt lying between 20°N 35°N, leaving hardly any formations lower inner-tropical latitudes. After demise towards end low-latitude recovered during Oxfordian, accompanied southward migration corals northern hemisphere. As suggested stable isotope palynological data, faunal can be correlated with significant rise seawater temperature Oxfordian.