Reports & Proceedings — Geological Society of London. 89 



(sublavis) marks an equally important horizon in Upper C, as it does 

 in the Belgian Province. 



D beds are peculiar in the western part of the Clitheroe Province, 

 and are largely represented by shales, mudstone, and thin earthy 

 limestone; but in the north and north-east in the Settle and Burnsall 

 districts, thick, fossiliferous, obscurely bedded limestone with a rich 

 brachiopod and molluscan fauna occur. , 



The Pendleside Series is well developed, and practically the whole 

 sequence is exposed on the north-western flank of Pendle Hill. 

 This series can be subdivided into life-zones by the Goniatites. 



The lower 300 feet consists of well-bedded earthy limestones with 

 much chert, characterized by the presence of Prolecanites compressus. 

 As a rule, there is a well-marked limestone horizon, which the 

 authors name the Eavensholme Limestone (from a farm of that name 

 at the north-eastern end of Pendle) ; this limestone contains 

 Zaphrentis amplexoides, Cyathaxonia rushiana, Michelinia tenuisepta, 

 and M. parasitica, and the fauna is a very important and constant 

 feature throughout the whole province. The Kavensholme Limestone 

 is an important part of the "Pendleside Limestone" of the late 

 Mr. E. H. Tiddeman. 



The Pendleside Limestone is succeeded by hard, black, calcareous 

 shales with Glyphioceras striatum, JVomismoceras rotiforme, and 

 Posidonomya becheri ; and these in turn by the Bowland Shales of 

 Phillips, which contain the zones of Glyphioceras spirale and 

 Glyphioceras bilingue. 



The Upper Pendle Grit succeeds the zone of Glyphioceras bilingue, 

 and is the homotaxial equivalent of Farey's Grit of the Peak Country. 



An important horizon occurs between the Kinderscout and the 

 Millstone Grit — Sabden Shales — characterized by a rich fauna with 

 Glyphioceras beyrichiamim and Glyphioceras reticulatum. It is 

 considered probable that the well-known fossiliferous Hebden 

 Bridge Beds may be on this horizon rather than in the Pendleside 

 .Series. 



•Table of Goniatite Zones. 

 " Middle " Coal-measures. Oastrioceras carbonarium, von Buch. 



Lower Coal-measures. G. carbonarium, von Buch. 



Upper Millstone Grit. G. listeri, Martin. 



Sabden Shales. Glyphioceras diadema, Beyrich. 



i /Shales below Millstone Grit. tG. bilingue, Salter. 



|'S t> i j oi i -! G. reticulatum, Phillips. 



Z™ \ Bowland Shales. | n ■ ■ 7 „ D , .„. „ 



o_2j \G. spirale, runups. 



G. striatum, Phillips. 



Posidonomya becheri { Nomismoceras rotiforme, Phillips. 



Shales. {Prolecanites compressus, Sowerby. 



Carboniferous Limestone D2. Glyphioceras crenistria, Phillips. 



2. December 18, 1918.— Mr. G. "W. Lamplugh, F.R.S., President, in 



the Chair. 



The following communication was read : — 



"On a Bed of Interglacial Loess and some Pre-Glacial Freshwater 

 Clavson the Durham Coast." By Charles Taylor Trechmann, D.Sc, 

 F.G.S. 



