6i8 



FAUNAL SUCCESSION OF THE UPPER BERNICIAN 



member resembles the Haltwhistle facias, but the lower 

 member is built up of thickly bedded strata separated by thin 

 layers of shale. The incomplete exposures between Haltwhistle 

 and Scots Gap exhibit these thick calcareous " posts." In the 

 north, the character of the lower member prevails throughout 

 the bed, but the limestone is strongly argillaceous in the upper 

 portion. 



Fiutnal Diagnosis. 



Corals : — Corals rare and mainly pertaining to a Zaphrentid 

 stage. 



FoRAMiNiFERA : — Saccaiiuiiiiia carteri is the most useful 



index of this and the underlying limestone. 



Fatinal List. 





M 



c 

 o 



6 



a 



U 

 in" 



c 



c 

 <u 



Q 



c 

 ■5 



0) 





 c 



U 



a 

 



M 



iH 



CU 



a 



D 



:-) 

 



? Carcinophyllum 





Cyclophyllum aff. pachyendothecum, Thorn. 



- 











- 



Lithostrotion junceum (Flem.) ... 













- 



Caninia sp. near cornucopioe, Nich. 



- 













Zaphrentis aff. enniskilleni, Ed. & H. 



- 











- 



Palseacis cyclostoma (Phill.) 









- 







Fenestella 









- 







Seminula ambigua (Sow.) 



- 



- 



- 







- 



Spirifer trigonalis (Mart.) 



- 



- 





- 



- 



- 



Martinia glabra (Mart.)... 







- 





- 



- 



Reticularia lineata (Dav.) 



- 



- 





- 







Pugnax pleurodon 



- 







- 







Pugnax pleurodon p, Phill. 





- 











Rhipidomella aff. michelini (L'Eveille) 











- 





Schizophoria resupinata (Mart.) ... 



- 



- 



- 





- 





Ortliotelid 





- 



- 



- 



_ 



_ 



Prodnctus longispiniiP, Sow. 





- 











Productus punctatus (Mart.) 





- 











Productus aff. youngianus, Dav. 





- 











Productus scabriculus (Mart.) 





- 











Productus semireticulatus, Mart. 











- 





