1867.] JTBD — LIXCOLXSHTEE WOLDS. 249 



South Win Ingham the Lower Chalk and Hunstanton beds dip 25° ^., 

 while in that at the Heneage Arms Inn they show great signs of 

 disturbance, being in one part level, and in another dipping 28"^ X. 

 Above the village of Searby the beds of Lower Chalk are actually con- 

 torted ; and at Worlaby the Hunstanton series is cut across by a fault 

 ranging X. and S., by which the red chalk is brought into juxtaposi- 

 tion with the white. At this place, as also at Gaumer Hill, veins of 

 crystallized calcspar occur near the base of the white chalk, 



YI. COXCLTTSIOX. 



Believing that a full discussion of the exact age of the several 

 series of beds described in the foregoing paper would at the present 

 time be premature, I propose to offer a few very general remarks 

 only by way of recapitulation. 



With regard to the Hunstanton limestone, the observations of Mr. 

 Seeley in a recent paper*, if not altogether conclusive, are at least 

 exhaustive of the subject as far as the data at present go. We can 

 scarcely be wrong in assigning this series, which is conformable with 

 the Upper Cretaceous beds, but unconformable with the Xeocomian, 

 and which has a fauna so distinct from those of the beds above and 

 below it, to the age of the ITpper Greensand or Gault — or in sup- 

 posing, as is perhaps more probable, that it represents both of these 

 formations. 



That the Tealby series represents a part of the great Xeocomian 

 formation cannot be doubted ; but the analogies of its fauna, like that 

 of the Speeton clay, are to be sought for in the Xeocomian of North- 

 western Germany and South-eastern France, rather than in the Lower 

 Greensand of the south of England. We have already shown that the 

 stratigraphical relations of this formation are identical with those of 

 the Speeton clay of Yorkshire ; and a large proportion of the fossils of 

 the Tealby series are also found in the Speeton clay. Thus the whole 

 of the BeJemnites, including at least two forms {B. lateralis and 

 B.jacidum) found in no other British deposit, are common to the two 

 formations. Similarly the very characteristic gigantic form of Fecten 

 cinctus is found in a particular zone of the Speeton clay. It is a 

 noteworthy fact that Ammonites are rare or absent in this particular 

 zone of the Yorkshire deposit, but the species of Ancyloceras found 

 agree with those of the Tealby series. On the other hand, a few 

 species peculiar to the Tealby series and new to this country, as 

 Ammonites chjjoeiformis and Terehratida Tiijopojnis, appear to charac- 

 terize the Middle Xeocomian of the Continent, to which stage in the 

 geological scale I venture to anticipate the Tealby series and the 

 equivalent portion of the Speeton clay will be finally assigned. To 

 these beds, therefore, the highest interest is attached, as the possible 

 marine representative of the Wealden of the south of England, and as 

 possessing a fauna now for the first time recognized in this country. 



The fossils of the Lower Sand and Sandstone, at present known, are 

 so few and imperfect as to preclude us from off'ering even an opinion 



* Ann. & Mag. Nat. Hist. 3rd ser. vol. vii. p. 23-3 et scq. 



