1856.] WRIGHT — UPPER LIAS SANDS. 301 



Ft. in. 

 c. A brown sandy oolite, passing into a coarse ferruginous 

 oolite ; containing many fossils not well preserved ; 

 oolitic grains of the hydrate of iron are scattered through 

 the brown calcareous matrix : it measures from 8 to 10 



Cephalopoda-bed. — Upper Lias, 



D. A coarse brown ferruginous bed, extremely hard where it 



is weathered, and containing an abundance of small 

 oolitic grains of the hydrate of iron ; many fossils are 

 collected from this rock, but they are not in general 

 well preserved ; a thin seam of clay divides the bed into 

 two portions; in the clay-seam nearly all the BracMo-^ 

 poda are found : the entire bed measures from 2 feet to 2 6 



E. Fine yellow micaceous sands, passing downwards into 



brownish sands mixed with marly bands; this bed is 

 non-fossiliferous ; its thickness is not accurately ascer- 

 tained, it may be from 60 to 100 feet 80? 



F. The blue clays of the Upper Lias are not exposed near 



the section ; but their position is shown by the outburst 

 of springs on the glacis of the hill. 



Fossils from the Inferior Oolite beds — a, b, c. 



A. The freestone-beds are flaggy and not fossiliferous. 



B. The fossiliferous nodules contain — 



Cephalopoda. 



Ammonites, nov. sp., resembling A. Garantianus, d'Orbig., Terr. Jurass. 

 pi. 123. 



Conchifera. 



Pholadomya fidicula. Sow. Ceromya Bajociana, d'Orbig. 



Modiola plicata. Sow. Lima bellula. Lye. 



Pinna fissa, Goldf. Pecten, nov. sp., allied to P. demis- 

 Myacites dilatatus, Buck. sus, Phil. 



Fossils from the Cephalopoda-bed — d, e, f. 



Cephalopoda. 



Ammonites opalinus. Rein.; very Nautilus inornatus, <i'0r6i^. 

 fine specimens. Belemnites breviformis, Voltz. 



insignis, Schubl. compressus, Voltz. 



variabilis, d'Orbig. irregularis, Schloth, 



Gasteropoda. 



Turbo capitaneus, Munst. Pleurotomaria, sp. 



Conchifera. 



CucuUaea, nov. sp. Modiola plicata. Sow. 



Myacites abductus ?, Phil. Astarte lurida. Sow. 



Brachiopoda. 



Rhynchonella cynocephala, Richard. Terebratula subpunctata, Davidson. 



furcillata, Theod. 



Y 2 



