Figure F11. Leg 210 timescale and primary calcareous and siliceous microfossil datums for the latest Jurassic–Early Cretaceous. T = top (last occurrence), B = bottom (first occurrence). Forams = foraminifers, Nannos = nannofossils, Rads = radiolarians. Foraminifer datums are underlined. Datum ages (Ma) are in parentheses.