N£\VTON : CONCHOLOGICAL FEATURES Of LENttAM SANDSTONES. 10$ 



Britain 



Coralline Crag 

 St. Erth Beds 

 Lenham Beds 

 Box Stones 



Redonian France (N.W.) 



Vindobonian ... ... ... Italy; Vienna Basin. 



Collections — 



M.P.G., No. 427. 



B.M. (Prestwich and Graham Wallas). 



Fani. VENERID.F:. 



PlTAR RUDIS Poll. 



Venus rtidis Poli : Test. Sicilise, 1795, vol. 2, pi. 20, figs. 15, 16, 



p. 94. 

 Pilar rudis Sacco : Moll. Terz. Piemonte, 1900, part 28, A. 4, 



figs. 22-25, P- 19- 



istribiition — 









Recent 





.. Mediterranean; Black Sea, etc. 



Post-Pliocene 

 Red Crag 



} • 







Britain 



Scaldisian 





. • ... ... 



Belgium 



Astian 





... 



Italy 



Plaisancian 





France 



(S). ; Italy 



Coralline Crag 

 Lenham Beds 



V 





Britain 



Redonian 





France (N.W.) 



Vindobonian .. 





Italy 



; Holland. 



Collections — 



M.P.G., Nos. 423, 424. 



B.M. (Prestwich and Graham Wallas). 



Callista chione Linnaeus. 



Venits chione Linnaeus : Syst. Nat, 1758, ed. x., p. 686. 

 Callista chione Sacco : Moll. Terz. Piemonte, 1900, part 28, pi. 2, 

 figs. 3-6, p. 12. 



Distribution — 



Recent ... British and Mediterranean Seas 



Red Crag (derivative) ... ... ... Britain 



Scaldisian ... ... ... ... ... Belgium 



Astian ... Italy 



Plaisancian ... France (S.) ; Italy 



Coralline Crag ^ t? -^ • 



T . T, , ' Britam 



Lenham Beds 



