STRATTGRAPHICAL DISTRIBUTION. 



115 



VI. Nautilus l^ivigatus layer, a loose sand, nearly one foot in thickness, and con- 

 taining but few fossils. N. laevigatas is also found in the Farringdon Sand and 

 Gravel. 



These details were accompanied by a numerous collection of all the Brachiopoda 

 peculiar to the locality, and after minute examination, I have referred the individuals 

 to the following species. The stratigraphical distribution is given on Mr. Wiest's 

 authority. 





I. 



II. 



III. 



IV. 



V. 



Terebratula semiglobosa, Sowerby .... 





* 



# 



* ? 





„ squamosa, Mantell .... 







X 



* 



^f 







„ rugulosa, Morris .... 









* 



* 







„ ovata, Sowerby ..... 













* 





Megerlia lima, Defrance ..... 







, . 



, . 





* 





Terebratella Menardi, Lamarck . 











* 







„ pectita, Sowerby 













* 



# 



Terebrirostra lyra, Sowerby 













# 



* 



Trigonosemus incerta, Davidson 









* 



* ? 







Rhynchonella latissima, Sowerby . 









* 



* 



* 





,, compressa, Lamarck 









* 



* 



* 





„ depressa, Sowerby, var. A. and B. 













* 





,, nuciformis, Sowerby 













* 



■X 



,, Grasiana .... 











•• 



* 



* 



„ Cuvieri .... 









* 



* 







Chardstock is, therefore, a particularly interesting locality; it exhibits the British 

 equivalents of the Craie chloritee of France and the Tourtia of the Belgians. II and III 

 entirely agrees in mineral composition, external aspect, and palaeontological contents, with 

 the Craie Chloritee of the Mont St. Catherine, near Rouen (France), and in both localities 

 we find Ter. rugulosa, T. squamosa, as well as the generality of fossils peculiar to 

 that age. Ill constitutes by its fossils a natural passage into IV, which last contains the 

 greatest number of species common to the Upper Green Sand of Warminster; Havre 

 (France), and the Tourtia of Belgium; among the Brachiopoda we may mention 

 Ter. lyra, T. ovata} T. pectita, Meg. lima, Rh. latissima, R. compressa, R. Grasiana, 

 R. depressa, and R. nuciformis. 



In England, the neighbourhood of Warminster has yielded by far the greatest number 

 of Upper Green Sand Brachiopoda, it contains — 



' I have found Ter. ovata, M. lima, and Rhyn. lineolata, in the Tourtia near Tournay, species not 

 recorded in Viscount D'Archiac's memoir. 



