Gaster (1924, 1927, 1929, 1932, 1937, 1941, 1944) - Echinocorys cincta Subzone

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Biostratigraphical correlation: Equates with the upper O. pilula Zone (Subzone of abundant O. pilula) and lower G. quadrata Zone (Hagenowia Horizon) of current usage.

Lithostratigraphical correlation: Equates with the upper Newhaven Chalk and lower Culver Chalk of southern England.

Horizons: abundant O. pilula
Hagenowia rostrata

Age: Campanian