BGS Zone 6 (=modified UKB7 of Hart et al., 1989)
Base: Inception of Lingulogavelinella globosa.
Top: Extinction of Hagenowina advena in the base of the Plenus Marls.
Biomarkers:
- Dicarinella hagni and Dicarinella algeriana appear in the upper part of the Zone (upper C. guerangeri macrofaunal zone).
Macrofaunal correlation: Very latest A. jukesbrownei Zone, C. guerangeri Zone and M. geslinianum Zone
Age: Mid to Late Cenomanian