THE OSTRACODAL RESPONSE TO THE CENOMANIAN-TURONIAN BOUNDARY EVENT AT WESTBURY (WILTSHIRE, UK)

A detailed study of Ostracoda changes against the stable isotopes of carbon and oxygen across the Cenomanian-Turonian boundary mass extinction has been fully documented in one section, the South of England. This section comprises the uppermost Cenomanian to lowermost Turonian strata. The comparison between the results obtained in this research and two rival models for the Cenomanian-Turonian boundary mass extinction, famine and high productivity, have been carried out. Low oxygen level has been proposed as the main cause of the Cenomanian-Turonian boundary mass extinction.