BGS Zone 15 (=upper UKB12 of Hart et al., 1989)
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Base: Inception of Stensioeina exsculpta exsculpta
Top: Inception of Loxostomum eleyi.
Macrofaunal correlation: lower M. coranguinum Zone (above the Upper East Cliff Marl / Shoreham Marl 2, but below the Hope Point Marl and lateral equivalents).
Age: Coniacian