6l2 FAUNAL SUCCESSION OF THE UPPER BERNICIAN 



Faunal List. 



Chonetes cf. hardrensis (Phill.) 

 Lingula mytiloides, Sow. 



Do. squamiformis, Phill. 

 Productus scabriculus (Mart.) 

 Rhipidomella aff. michelini 



(L'Eveille). 

 Orthotetid. 



Spirifer bisulcatus, Sow.* 

 Posidonomya becheri, Goldf. 



Sanguinolites augustatus (Phill.) 



Edmondia variabilis. 



Bellerophon sp. 



Euomphalus pentangulatus, Sow. 



Goniatites sp.* 



Phillipsia sp.* 



Fenestella sp.* 



Land plants.* 



Corals and crinoids absent. 



Notes : — This is the only bed in which I have found 

 Posidonomya, but Professor Lebour speaks of them as common 

 in several Bernician shales. 



The Scar, and the Nine Yards, Eelwell or North 

 Sunderland Limestones. 



These two hmestones are either the same bed, or very 

 closely approximate to the same horizon. 



Scar Limestone. 



Geographical Distribution. 

 Tyne District. Closely associated with the Whin Sill. 



Stratigraphical Character. 



The limestone, as exposed in the neighbourhood of the 

 Roman Wall, is a black crystalline rock, hardened and coloured 

 by contact with the igneous intrusion. Fossils partially 

 destroyed. 

 Faunal Diagnosis. 



Corals : — Diphyphyllnni lateseptatuni abundant ; Dibuno- 

 phyllids plentiful. 



Brachiopods : — Productus giganteus, Martin's species 

 common. 



Notes : — Lithostrotion jtinceuni and Diphyphylluni late- 

 septatum both form bands in the limestone. Spiriferids and 

 other brachiopods plentiful. 



Eelwell and North Sunderland Limestone. 



Geographical Distribution. 



Seen in the coastal section at Beadnell and at Sea Houses. 

 (On account of a large anticline it appears on both sides of 



* Recorded by Prof. Lebour. See Lebour— " Posidonomya Beds at Budle." 

 Geol. Mag., Feb., 1885. 



