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DR. A. VATJGHAN ON THE PAL^ONTOLOGICAL [May 1905, 



(C) In the Wick war- Sodbuiy Ridge. 



(1) The ' Wick Rocks,' and other exposures near Wick. 



Wick lies on the east of the Bristol Coalfield, 8 J miles due east 

 of the Clifton Suspension-Bridge. The Carboniferous projection at 

 Wick is an inlier which marks the southern extension of the 

 Wickwar-Sodbury ridge, below the capping of Mesozoic beds ; it 

 lies 6 miles due south of the end of that ridge at Sodbury. The 

 general geology of the Wick district has been so thoroughly de- 

 scribed by Prof. Lloyd Morgan 1 that any detailed account of the 

 topography is rendered unnecessary. 



(a) The ' Wick Rocks ' (including several quarries). 



This is a fine section through the Semimda-Zone, from above S x 

 up to the concretionary beds at the top of the zone. So exactly 

 does the pakeontological sequence agree with that observed at 

 Sodbury, that little more than a bare list of fossils will suffice : — 



Productus ' gigan tens.' 

 Chonetes aff. comoidcs. 

 Chonetes papilionacea. 

 Seminula ficoidea and allied forms. 



Lithostrotion Martini and variants. 

 Syringopora cf. distans and var. 

 Clisiopbyllid. 

 Productus aff. Cora. 

 Productus aff. hemisphericus. 



Lithostrotion Martini teems at the base. 



Productus aff. Cora, in a characteristic form (mut. S 2 ), occurs in the thick 



oolitic band. 

 Seminula ficoidea crowds certain beds in the upper part of the zone ; and 



near the arch, where these beds are well weathered, specimens showing 



the spiral arms beautifully weathered out, are abundant. (Beds on the 



same horizon, just below the Observatory, on Observatory Hill, Avon 



section, exhibit the same character.) 

 Chonetes papilionacea crowds certain bands, which occur at intervals from 



the oolite onwards. 

 A- Clisiophyllid is not common, but occurs occasionally from the oolitic 



band onwards. 



These beds correspond exactly to those at Sodbury, east and west 

 of Lilliput Bridge, and, in the Avon section, to the upper part of 

 the Great Quarry. 



(6) The section at the Ochre Works. 



LonsdaliaSvLbzone ( Dibunophyllam-Zoiio) . 



This section is almost identical with that at Wrington (see below, 

 p. 242) and in Bridge-Valley Road, on the Clifton side of the Avon, 

 as is shown by the following fossils : — 



Lithostrotion ensifer. Lonsdalia floriformis (and var. cf. 



Lithostrotion irregtdare. L. rugosa). 



Lithostrotion Portlocki (var. M'Coy- Koninckophyllid CyathophyUum. 

 anum). Libunophyllum t|/. 



Axophyllum 6. 



1 Proc. Bristol-Nat. Soc. n. s. vol. vi (1889-91) p. 183. 



