SPEETON CLAY. 59 



meridge Clay, one in the Lower Green Sand, thirteen in 

 the Gault, and one in the Chalk ; from which statement 

 Professor Phillips observes, " That the Blue Clay of Speeton, 

 in Yorkshire, is especially to be referred to the Gault, or 

 Blue and Grey Marls of Cambridgeshire, Kent, and Sussex ; 

 but that it also contains some characteristic indications of 

 the Kimmeridge Clay, and therefore we should expect that 

 in Yorkshire these two strata are not separated as in the 

 South of England." 



LIST OF PUBLICATIONS. 



Phillips, J., ' Geology of Yorkshire,' part 1. p. 47 and 93, plate of 

 sections, No 3. 



FOSSILS OF THE SPEETON CLAY. 



POLYPARIA. 



CaryophyUia conulus, Phil. 



Radiata. 

 Spatangns argillaceus, Phil. 



Aknelida. 

 Vermicularia Sowerbii, Mant. 



Crustacea. 

 Astacus omatns, Phil. 



CoNCHrFEKA. 



Thracia depressa, Sow. Astarte Ijevis, Phil. 



Mya phaseolina, Phil. Nucula ovata, Manl. 

 Pholas constricta, Phil. subrecurva, Phil. 



Pholadomya decussata. Maul. Lucina seulpta, Phil. 



Corbula punctum, Phil. Pinna gracilis, Phil. 



Isocardia angulata, Phil. Gryphsea sinuata, Sow. 



