Figure 1: Location and age of fossil samples within the database.

(a) Location of fossil samples: U-series dates (this study, red, open squares; Hibbert et al.12, green crosses); marine radiocarbon (blue, filled circles) and terrestrial radiocarbon samples (orange, open circles). (b) Age frequency of fossil samples: all samples in the database (Data Citation 1, grey); U-series (red); and radiocarbon dated (marine, blue; terrestrial, orange).