TY JOUR TI Late Middle to Late Ordovician Phosphate Accumulation of the Moyero River Section (Siberia): A Record of Upwelling and Global Cooling KW Middle Ordovician KW Late Ordovician KW upwelling KW phosphates KW Siberian platform KW Paleoclimate JO Russian Journal of Earth Sciences AU Lykov, N.A. AU Rostovtseva, Y.V. AU Dronov, A.V. PY 2025 IS 24 PB Geophysical Center of the Russian Academy of Sciences