ALBIAN FOSSILS DISCOVERED AT OKEFORD FITZPAINE. 99 



In describing the fossils from this part of Dorset I wish to 

 observe that only the leading synonomy is given of each species. 

 Similarly when treating of their geographical distribution only a 

 few of the principal localities are referred to. 



When quoting the time range for each species I have adopted 

 continental terms, these being more comprehensive than our local 

 English equivalents. To better explain this system of nomenclature 

 I 'have appended an abridged schedule setting forth in sequential 

 order the main divisions of the Cretaceous rocks," the French 

 names being those employed by Prof. A. de Lapparent in the last 

 edition of his "Traite de. Geologic," 1893. 



TABLE OF THE CRETACEOUS FORMATIONS. 

 [ABRIDGED.] 



CONTINENTAL 



TERMS. BRITISH EQUIVALENTS. 



Danian [Not represented.] 



Senonian Norwich and S. of England Chalk (with Bints). 



Turanian Chalk. Rock and Chalk without flints. 



Cenomanian Chalk Marl, Chloritic Marl, and Upper Greensand. 



(Blackdown Beds, Cambridge "Greensand, "Red Rock of 

 Hunstanton, Gault Clay, Acanthoceras mammillatum 

 Zone. 



( Lower Greensand, Folkestone, Sandgate, Hythe, Far- 

 Aphan . 



( ringdon, &c. 



Barremian Punfield and Atherfield beds. 



{Exogyra Couloni (= E. subsimiata, Leymerie) beds of 

 Speeton Cliff, &c., Weald Clay and Hastings Sand 

 (Sussex). 



In bringing this paper to a close I must draw attention to the 

 fact, alluded to in my former notice on this subject, that the 

 measurements of the beds at Okeford Fitzpaine were most care- 

 fully obtained by Miss Forbes and Miss Lowndes, to whom I am 

 also indebted for the organic remains forming this collection and 

 which are now deposited in the British Museum. Lastly, my 

 thanks are due to Mr. G. C. Crick, F.G.S., for valuable aid when 

 drawing up my descriptions of the Cephalopods dealt with in the 

 paper. 



