a: The age uncertainty is the depth-related uncertainty in the reversals as determined across parallel holes at IODP Site U1337, but does not account for the actual duration of the reversal itself. Reversals have been shown to frequently occur over a few thousand years, with the shortest duration occurring at low-latitude sites, such as IODP Site U1337 (Clement, 2004).b: Lourens et al., 2004 and Hilgen et al., 2012.c: Hilgen et al., 1995.d: Cande and Kent 1995.e: A1 ash (Faneromeni) located between these two reversals.f: Krijgsman et al., 1999 - Sorbas section.