Note that only biostratigraphically releveant species were regularly recorded here with sampling focussed around datum intervals. These are not full assemblage counts.Abundance: X = present (relative abundance not determined).Additional samples from the stable isotope dataset used here were checked for marker taxa but not transcribed if not close to datum boundary. These data are in a lab book not accessible because of COVID-19 lockdown but do not change the position of the bioevents. Pearson and Coxall, unpub. = datums published in Pearson and Ezard (2014). Raw presence/absence data unavailable so re-evaluated marker species in this study and included inferences from datum tables.Datum picks used here are shown as (D)