Abstract
Dinocyst assemblages from 41 samples collected from a 40 m section of the Jurassic Lower Kimmeridge Clay in a clay-pit in Westbury, Southern England, are described. 47 dinocyst species, 1 acritarch species and 1 tasmanid species are recorded. A new genus Protobatioladinium and two new species Protobatioladinium westburiensis and Perisseiasphaeridium ingegerdii are proposed. The species Palaeoperidinium crassinervum Deflandre, 1939 is redescribed and emended. The dinocyst assemblage is confined to the Endoscrinium luridum Zone (Wollam & Riding, 1983) which correlates with the Cymodoce, Mutabilis and Eudoxus ammonite zones. The Endoscrinium luridum Zone is subdivided into two new dinocyst subzones, Stephanelytron scarburghense and Perisseiasphaeridium pannosum.
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