Dinoflagellate cyst and acritarch associations in the paleogene of Southeast England

Abstract

Abstract A study of quantitative variations in some Lower Tertiary dinoflagellate and acritarch assemblages has demonstrated the existence of four distinct associations. Each association is characterized by the presence of species belonging to one of four genera. In each sample, any one of these four associations is dominant. The distribution of the associations can usually be related to lithology. From this it is inferred that the controlling factors are ecologic.