f Probable and improbable results in probabilistic correlation of biostratigraphic events

The framework of biostratigraphy consists of consecutive fossil events in geological time. It can be argued that the 'true' sequence of consecutive events wilt always be elusive. As a substitute for biostratigraphic practice, 'standard' sequences of events are compiled by various methods. With appropriate software, a probabilistic standard events sequence can be compiled from a large number of stratigraphic sections, i.e. wells or surface exposures.