Category:Belemnite zonation for the Upper Coniacian, Santonian & Lower Campanian of the UK

From Earthwise
Jump to navigation Jump to search

Overview

Christensen (1991) used biometric analysis to characterise and speciate belemnites from the Upper Coniacian, Santonian and Lower Campanian of the Chalk Group in southern England.The procedure included comparison with similar analyses of known species elsewhere in Europe. The distributions of the species thus determined allowed recognition of the standard NW European belemnite zonation in the Chalk Group of southern England and East Anglia, and also revealed the correlation between this zonation and the standard macrofossil zonal scheme for the UK Chalk Group.

Descriptions of Upper Coniacian, Santonian & Lower Campanian belemnite zones in southern England and East Anglia

The key features of the Upper Coniacian, Santonian and Lower Campanian belemnite zones recognised in southern England and East Anglia are described from oldest to youngest. Alternatively, to find out information about a specific zone, select it from the correlation table (correlation of standard NW European belemnite zones in the Upper Coniacian, Santonian & Campanian with the standard macrofossil biozonal scheme).

NB: The species discussed below are based on a statistical analysis of measurements of morphological features. Therefore, recognition of the zones founded on these species cannot be readily made in the field from a visual inspection of the belemnite fauna.