BGS Zone 16 (=UKB13 of Hart et al., 1989)
Base: Inception of Loxostomum eleyi.
Top: Inception of Stensioeina granulata polonica
- Stensioeina granulata granulata becomes rare at or near the upper boundary of the zone.
Macrofaunal correlation: Early (but not basal) M. coranguinum Zone (Hope Point Marl and Belle Tout Marl 2) to mid M. coranguinum Zone (Chartham Flint, Bailey’s Hill Flint and lateral equivalents).
Age: Late Coniacian & Early Santonian