54 STRATIGRAPHICAL DISTRIBUTION OF THE 



are dispersed throughout the mass, and may be most readily 

 distinguished on the surface." At Crickley Hill the Scissum- 

 Beds reveal on their weathered surfaces, mixed up with the 

 sand-grains and shell-debris, innumerable black particles, 

 which prove to be minute phosphatic bodies. These may 

 be the objects to which Brodie refers, but it is impossible 

 to identify them. 



THE INFERIOR-OOLITE VERTEBRATES OF NO VALUE FOR THE 

 PURPOSE OF MINUTE ZONING. 



From the above list it will be observed that the fish-teeth 

 called Strophodus are commonest in the Top-Beds (and 

 especially in the Clypeus-Grit) ; the reptilian remains (with 

 the exception of Megalosaurus bucklandi) in the " Inter- 

 vening-Beds ; " while the Freestone Series (except at 

 Huddingknoll, near Painswick, where Strophodus teeth are 

 very common) contains very few vertebrate-remains indeed. 

 The Upper Coral-Bed has jdelded a few, but unfortunately 

 indeterminate, teeth, although probably piscine. 



Except, then, that the flat Strophodus teeth predominate 

 in the Top-Beds, the little acuminate ? fish-teeth in the Upper 

 Coral-Bed, and the reptilian remains in the Intervening-Beds, 

 the Inferior-Oolite vertebrates afford little assistance in 

 subdividing the series, and are useless for minute zoning 

 purposes. 



