Vol. 59.] 



TOARCIAN OF BREDON HILL. 



453 



from Lower Lias to Inferior Oolite. It is a place where paucity of 

 accumulation obtained for a long time. 



Its Toarcian deposits show a thickness of only some 23 feet, and 

 yet the faunal sequence is nearly complete. The lower 15 feet 

 have great resemblance to the Toarcian deposits of North- West 

 Gloucestershire, as, for instance, those at Dumbleton, even to 

 showing the fine paper-shales ; only the thickness at Dumbleton is 

 much greater — it must be 100 to 150 feet. I append a description 

 of the section. 



Section No. 1 at Tilly-sur-Seulles (Calvados). 



[From a diagram drawn for me on the spot by Dr. Louis Brasil. My own 

 notes are in square brackets.] 



Flint-nodules 



with Murchisonce. 



Opalinus. [Opalinoid.] 

 Nodules with Moorei. 



2 i 



Dumortieria. 



■*. ( 



s 1 



S 



3 I 

 o I 



Striatulum. 



Variabilis. 



Clay with bifrons and communis. 



Bifrons. 



Falciferum. 

 Annulatus. 



[Paper-shales like Dumbleton.] 



1 — ' l Bhynchonella pygmcea. 



us. 



tetmhedra.] 



Spinatus. ( [Rock-Bed.] 



[Bhynchonella 



[Rock-Bed.] 



Middle Lias. 

 Mg. plcmicosta==[Liparoceras capricornu 

 and Microceras gagateu?n.] 



Wald. numismalis. 

 Spiriferina pinguis. 



Upper part of Lower Lias. 



Rhynch. Thalia. 

 [_ Gryphcsa Maccullochi. 



