Article: Use of palynologic assemblage-types in Wealden correlation

Analysis of extensive palynologic data from the English Wealden (Early Cretaceous) has enabled a comprehensive set of 17 palynologic assemblage-types to be defined in detail. This has been done in such a way that a rapid preliminary survey of a preparation will enable it to be placed in one of the assemblage-types so that its value for stratigraphic correlation or palaeoecology can be predicted without long and possibly uneconomic use of observation time. With the exception of Celyphus rallus gen. and sp. nov. of uncertain affinity, which is described because its presence is important in some assemblages, spore and pollen taxonomy is confined to brief comments on the sense in which some of the genera and species are used here.