View source for Chalk Biozone 14 - Palaeohystrichophora infusorioides

'''Age:''' Latest Campanian.

'''Macrofaunal correlation''':  The uppermost ''B. mucronata'' Zone.

'''Definition:'''  The interval between the FAD of ''Areoligera senonensis'' to the'' ''LAD of ''Palaeohystrichophora infusorioides.''

'''Comments:'''  An alternative index for the top of this biozone is the LAD of ''Senoniasphaera protrusa'' (see Costa & Davey, 1992; Wilkinson ''et al''., 1993).

'''Lithostratigraphical correlation''': The Portsdown Chalk Formation (Southern Province), the Rowe Chalk Formation (Northern Province) and the Mackerel Formation (North Sea).

[[Category:Palynological_zonation | 014]]