Base of Bed 1 in DBH subsection Location of Stratotype Point Base of Eocene Dababiya, near Luxor, Egypt true Stratotype Point Base of Ypresian Micropaleontology 49/1, p.41 59, 2003 Stratotype Point Base of Eocene Episodes 30/4, p. 271 286, 2007 Ratified 2003 Carbon Isotope Excursion base, initiation of basal Eocene Thermal maximum (PETM) Base of Eocene Stratotype Point Base of Ypresian