Gaster (1924, 1927, 1929, 1932, 1937, 1941, 1944) - Offaster pilula Zone

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Biostratigraphical correlation: Equates with the upper U. anglicus Zone, O. pilula Zone and lower G. quadrata Zone (Hagenowia Horizon) of current usage (Young & Lake, 1988).

Lithostratigraphical correlation: Equates with the greater part of the Newhaven Chalk Formation and the basal part of the Culver Chalk Formation of southern England.

Subzones: E. depressula Subzone
E. cincta Subzone

Age: Campanian