Vol. 6S.^ SUCCESSION !!«■ THE NORTH-WEST OF ENGLAND. 



463 



Westmorland Pennines no Carboniferous rocks so low in the sequence 

 have been met with. The beds are composed of alternations of 

 compact dolomites and impure shaly limestones, and form a transi- 

 tional series between the porcellanous beds of the Camarotoecliia- 

 proava Band below, and the more purely calcareous and oolitic 

 rocks of the overlying beds. Where typically developed, Productus 

 glohosus is associated with. Pr.rotundus aund EhyncJionella faiucettensis. 

 The last species being unknown in the Korth-Western Province out- 

 side this band, we may with advantage associate it withPr. glohosus 

 as an index-fossil for this horizon. Near Shap Toil-Bar the beds are 

 markedly dolomitic, and the fauna undergoes certain modifications, 

 being characterized by its wealth in gastropod species. 



The foUoAving fauna occurs normally in the Productus-globosus 

 Band and overlying beds up to the base of the Thysanoi^hyllimi- 

 pseudovermicidare Band ^ : — 



Syringopora sp. 



Zaphrentis cf. omalmsi Ed. & H. 



Archcsocidai'is plates and spines, 



Stenophragma lohatum, gen. et 

 sp. nov. Muni'o. E.. 



Orhiculoidea cf. nitida (PhilL). 



Athyris glahristria (Phill.). 



Cyrtina cf, carbonaria (M'Ooy). M. 



F. G. 

 Prodtccfus glohosus, sp. nov. S. R. 

 Prodiccfus rotundus, sp. nov. 

 Bhipidomella micheUni (L'Eveille). 



Bhynchonella fawcettensis, sp. nov. 



Schellioienella sp. 



Seminula nS.ficoidea Vaughan. 



Se'iuinula gregaria (M'Coj'). 



Spirifer sp. 



Spiriferina sp. 



Avicidopecten cf. plano-clathratus 

 M'Coy. R. 



Euomphcdus sp. Very large. S. R. 



Ostracoda. Abundant. 



Deltodus 



sp. 



(6 4) The Thysanopliyllum-]jseiidovermiculare Band. 



This band lies 25 to 50 feet above the base of the Productus- 

 globosus Band, and forms a valuable horizon in the eastern districts. 

 The band is usually composed of thickly-bedded, compact, grey 

 limestones which are frequently oolitic ; indeed, it forms the base 

 of a series of oolitic deposits which persist into the MicJieliani 

 Zone in many districts. It is often cherty and occasionally 

 contains a few white quartz-pebbles, foreshadowing the conditions 

 that prevailed during the deposition of the overlying beds. 



Fauna. 



Cyathop)liyUum of. mtdtilamellatum 



M'Ooy. 

 Cxninia suhihicina M'Coy. 

 Syringopora sp. 

 Thysanophyllum pseudovermiadare 



(M'Coy). 



Fistidipora incrustans Pbill. R. 



Froductus cf. rotundus. 

 Chonetes aff. papiUonacea (Phill.). S. 

 Small convex form. 



Bellerophon costatits Sby. 



iM=Meathop; Fr=Eurness District: 

 District; and R = Ravenstonedale District. 



G=: Grange District; S = Shap 



