﻿550 



MR. A. WILMORE ON THE CARBONIFEROUS [NOV. I9IO,. 



Syringopora aff. reticulata, Goldf. 



(Exceedingly common.) 

 Syringopora ramulosa, Goldf. (Not 



so common.) 

 Comma hettonensis, sp. nov. (Very 



common, see § III.) 



Productus pustu 

 mon.) 



Phill. (Com- 



Productus semireticulatus, Mart. 

 Productus martini, Sow. 

 Productus giganteus, Mart. 

 Chonetes papilionacea (Phill.). 

 Chonetes aff. hardrensis (Phill.). 

 Athyris sp. 



Orihotetes crenistria (Phill.). 

 fragments.) 



(In. 



Quarry near Hetton Village. — This is an old quarry, now 

 partly overgrown, immediately north of Hetton village. These 

 beds are again on the northern side of the anticline. Dark muddy 

 limestone, with thin shaly beds, very similar to the Winterburn- 

 Chapel beds. The dip is 68° or 69°, slightly east of north. The 

 thickness, including the overgrown beds, is about 135 feet. There 

 is again evidence of movement in the abundance of slickensided 

 surfaces. 



On the whole, these beds seem to be most like those of the 

 Middle Crags near Bell Busk. 



List of Fossils obtained. 



Syringopora sp. (A form which is not 



common elsewhere.) 

 Syringopora cf. ramulosa, Goldf. 



(With small corallites.) 

 A?nplexus aff. coralloides, Sow. 



Caninia hettonensis, sp. nov. (Very 

 similar to the form described from 

 the last quarry.) 



Caninia gigantea, Mich. 



Rylston Railway Quarry. — This is an important cutting 

 which shows the Carboniferous Limestone of the anticline nearly at 

 the top of the series. The grits cannot be far away. It is not very 

 distant from the dip-mark 20° S.S.E. (Geol. Surv. 1-inch map), about 

 half a mile south of Rylston and a little north of Low Wood. It is 

 close to the down side of the line from Skipton to Grassington. 

 The dip is about 13° south-south-westwards. The beds are of varied 

 character, and it is well to specify them exactly. The section,, 

 in descending order, is as follows ; — 



Thickness in feet inches.. 



Coarse crinoidal debris, with shells and corals 16 5 



Thin shale-parting 6 



Finer crinoidal limestones 5 



Coral-bearing muddy shale 8 



Massive blue limestone, with corals 3 5 



Calcareous muddy shale 6 



Fine-grained massive limestone 1 8 



Black shale 2 



' Blue' limestone 1 8 



Shale 4 



Rapidly changing succession of thin beds, limestone and 



shale, with predominant shale, to bottom of quarry ... 12 



Total thickness seen 44 2 



