Abstract

Through comparison of the extinction level of Stylatractus universus with the δO18 record in widespread high- and low-latitude deep-sea cores, we show that this level is globally synchronous. It occurs in the lower one-third of the isotopic transition between isotope Stages 12 and 11. Several independent estimates of the date of this extinction converge on 410,000 ± 5,000 yr ago. This biostratigraphic datum is now well dated and is globally synchronous.

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