Vol. 68.] STJCCESSIOZ^ IN THE NORTH- WEST OF ENGLAND. 465 



Fauna. 



Cyathopliyll'um cf. multilamellaUim 



M'Coy. 

 Syringopora retmdata Goldf. 



Athyris glahristria (PhilL). 

 Camarophoria isorhyncJia (M'Coj). 

 Schellvjienella sp. 

 Froductus cf. hemisphericus Sby. 



BhynclioncUa sp. 



Spirifer furcatus M'Coy. Eare. 



Syringothyris ciispiclata (Mart.). 



Belleroplion sp. Abundant. 

 MurcJiisonia cf. angulata Phi 11. 



Donald.i 

 Pleurotomaria sp. 



The fossils are usually fragmentary, testifying to wave- or 

 current-action. The characteristic fossil, almost invariably present 

 in all exposures of this horizon, is Syringothyris cuspidata, which 

 occurs locally in considerable numbers. Though sometimes present 

 in the overlying beds, it is extremely rare, and the fullest develop- 

 ment of this species is certainlj^ at this horizon ; it may, therefore, 

 conveniently be used as the index-fossil to this band. In the 

 Kendal District the band is represented by a hard calcareous grit, 

 in which Syringoilujris cuspidata is again the most abundant fossil." 



Geographical distribution. — Throughout the Shap and 

 Eavenstonedale Districts ; under Eoman Fell in the Pennine 

 District ; below Cunswick Scar in the Kendal District. The band 

 is of especial importance in determining the date of submergence 

 of the Pennine District. 



(6 6) The Sjoirifer-furcatusliand. 



This forms a useful horizon near the summit of the Athyris- 

 ylahristria Zone. It is best developed in the Arnside and Grange 

 Districts, and consists usually of an oolitic limestone, crowded with 

 somewhat fragmentary shells which show signs of attrition. The 

 index-fossil occurs locally in great abundance, and is somewhat 

 variable in form ; but many specimens closely resemble M'Coy's 

 figure of 82^. furcatus.^ 



The following list includes species which occur in the upper 

 portion of the sub-zone, above the ThysanopJiyllum Band : — 



Carcinopkylliim simplex, sp. nov. M. 4 1 Productus cf. heriiisphericiis (Sby.). 



Jiophophyllum mcathopense, sp. nov. M. 

 Lophophyllum vesiculosum, sp. nov. M. 

 CamdherseUa compacta, sp. nov. M. 

 Cainpophyllion ciliatum, sp. nov. M. 

 Zaphrentis Iconinclci, Ed. & H. 



Semimda cf. amhigua (Sby.). 

 Athyris glahristria (Phill.). 

 Camarophoria isorhyncha (Phill.). 

 Derby a sp. 

 Productus cf, punctatus (Mart.). 



Beticularia cf, lineata (Mart.). 

 Bpirifer furcatus M'Coy. Yery abun- 

 Spirifer sp. [dant. 



Syringothyris cuspidata (Mart.). One 



specimen, 

 Ehyoichotreta angulata (Linn.). M. 

 Ehynchonella sp. 



Euomphalus pentangulatus (Sby.), 

 Bellerophon costatus Sby, 

 Naiicopsis plicistria Phill. 



1 See Q. J. G-. S. vol. xliii (1887) p. 621. These specimens were identified 

 by her as probably the above. 



2 The name ' Brownber Beds ' is derived from the outcrop of this band near 

 Newbiggin Station : it was first applied to the pebble-bed by Mr. K, H, 

 Tiddeman in the Geological Survey Memoir on Kendal, Sedbergh, Bowness & 

 Tebay, 1888, p. 31. 



3 ' Synopsis Char. Carb. Limest. Foss. of Ireland ' 1844, pi. xxii, fig. 12. 



4 M=: Found only at Meathop, in the Arnside District. 



Q.J. G.S. No. 272. 2 m 



