206 Mr. Webster on the Strata lying over the Chalk. 



Names given hy Lamarck 



Tongue of a fish of the\ 

 genus Raia . . . J 



Tail of the Sting Ray . 



Scales offish .... 



Vertebra? of various 

 species offish . . 



Cancer, aboveSO species 

 of Crabs 



'■ Gammarus or 



Lobster 



• Crangon or 



Prawn . . 



Wood, often pierced by 

 the Teredo navalis & 

 filled with pyrites or | 

 calcareous spar 



Fruits, branches, ex- 

 crescences, ligneous 

 seed vessels and ber- 

 ries impregnated with 

 pyrites .... 



Linnean names 



{ 



Places where they have 

 been found 



Sheppey 



Highgate 

 Sheppey 



Sussex, Sheppey, High- 

 gate 



Sheppey 

 Sheppey 

 Sheppey 



Portsmouth, Sheppey, 

 Higligate 



Sheppey, Emsworth in 

 Sussex 



Although nearly 600 species of fossil shells have been described 

 by M. Lamarck as belonging to the calcaire grossier, Messrs. 

 Cuvier and Brongniart have selected the following as particularly 

 characteristic of the several beds. 



Lower beds. 



Nummulites laevigata 



— — scabra 



■ ^- numismalis 



&c. 



Madrepora 

 Astraea 

 Caryophyllia 

 Fungites 



Cerithium giganteum 

 Lucina lamellosa 

 Cardium porulosum 

 Voluta cithara 

 CraSsatella lamellosa 

 Turitella multisulcata 

 Ostrea Flabellula 

 Cymbula 



