Biomarker 15: Lingulogavelinella ciryi inflata/Rotalipora reicheli FDO
The biomarker is found in the Hidra Formation in the Southern, Central and Northern North Sea (Mid-Cenomanian, rhotomagense Zone). Rotalipora reicheli is an excellent marker, but but it is not common and may be absent. In the Southern North Sea the FDO of Pseudotextulariella cretosa also occurs here. See Burnhill & Ramsay (1981) and Crittenden et al. (1991)
Correlation: This biomarker can be placed in the BGS foraminiferal Biozone 4 (Wilkinson, 2000).