Foraminiferal biostratigraphy of the Chalk Group in the York District

Foraminifera from the Chalk group in Yorkshire are only poorly known. The samples examined for this report add considerably to our understanding of their distribution and their relationship with associations in southern England. Foraminifera prove the age of samples from the Ferriby to Burnham Chalk formations and tie the “Upper Pink Band” and “Lower Pink Band” into the biostratigraphical scheme. Assemblages indicative of foraminiferal zones BGS4 to BGS16 were present. Recrystalisation of several faunas from the Burnham Chalk Formation prevented accurate age determinations.