248 



INDEX 



Speeton Clay; dinoflagellate assemblages, 

 Table 5, 

 historical background 18, 19, 

 stratigraphy 18, 19 

 Staplin, F. L., 157 

 Studland Bay, Dorset, 22 

 Surculosphaeridium, 157, 160, 161 

 cribrotubiferum, 161*, 162; PI. 9, fig. 6 

 longifurcatum, 163*, 164*; PI. 8, figs. 7, 11 

 vestitum, 162*, 163; PI. 9, fig. 8 

 Systematophora, 209 

 areolata, 209 

 placacantha, 173 

 schindewolfi, 209; PI. 22, fig. 5 



Tanyosphaeridium, 55, 98 



ellipticum, 100 



isocalamus, 100 



regulare, 99, 100; PI. 3, fig. 3 



variecalamum, 98,* 99; PI. 6, fig. 7 

 Thalassiphora, 234 



delicata, 235; PI. 26, fig. 8 



pelagica, 234; PI. 26, fig. 7 

 Trabeculate cysts, 15, 16 



Wetzeliella, 182 



subgen. Rhombodinium, 197 



glabra, 197, 198; PI. 20, figs. 9, 10 

 subgen. Wetzeliella, 183 



articulata, 183, 184; PI. 18, figs. 1-4 



var. conopia, 184; PI. 18, fig. 5 

 clathrata, 184, PL 18, fig. 6 

 coleothrypta, 185*, 186; PI. 18, figs. 8, 9 

 condylos, 193, 194; PI. 20, figs. 1, 2 

 homomorpha, 190, 191 



var. quinquelata, 191, 192; PI. 18, 



fig- 7 

 neocomica, 213 



ovalis, 192, 193; PI. 18, fig. 10 

 reticulata, 187*, 188; PI. 19, figs. 3, 6 

 similis, 194, 195; PI. 20, fig. 5 

 solida, 195 

 symmetrica, 196; PI. 20, fig. 6 



var. lobisca, 196; PI. 20, fig. 3 

 tenuivirgula, 188*, 189; PI. 19, figs. 



2, 4 

 var. crassoramosa, 189, 190*; PI. 

 19, figs. 1, 5, 7 

 varielongituda, 196, 197; PI. 20, figs. 4, 



Valensi, L., 9, 31, 73, 160 



Wall, D., 9 

 Wanaea, 154 



spectabilis, 154 

 West, R. G., 9 

 West Heslerton, Yorks, 18 

 Wetherell, E. W., 20 

 Wetzel, O., 28, 30, 53, 158, 219 

 Wetzel, W., 159, 160 



White, H. H., 19, 28, 29, 30, 53, 73, 126, 127 



White, M. C, 127 



Wilkinson, S. J., 19, 28 



Williams, G. L., 9, 20-27, 28-106, 157-198, 



215—235 

 Wit, R. de, 159 



Xiphophoridium, 146, 147 



alatum, 147, 148; PI. 16, fig. 11 



