153 



f Acrodus minimus, Ag. Nemacanthus 

 filifer, Ag. N. monolifer, Ag. 

 Hybodusminor.^iy. H.pyramidalis, 



vc^/^o xwv.^, ....-^ Ag. Gyrolepis Alberti, Ag. Sau- 



sulphuret of iron, copro- J richthys apicalis, Ag. Sargodon 

 lites, bones, teeth and', tomicus, Plien. Bones of Icbthyo- 

 sauiTis, Plesiosaurus ; tootli of 

 Ceratodus, with shells. Avicula 

 contorta, Port. Axinus cloaciaa, 

 0pp., Pullastra arenicola. Stride. 



The Bone-hed, a thin band 

 of grayish calcareo-sili- 

 ceous rock, with much 



scales of fishes, andbones 

 ofSaui-ia; a true osseous 

 breccia in parts 



Black Shales Non-fossilliferous. 



Pullastra led, dark grey, ( Avicula contorta, Portl. Cardium 

 micaceous, ripple-mark- Rhseticum, Mer. Pullastra aremcola, 

 ed Sandstone ( Strick. Modiola minuta, Gold/. 



„ , , /Pullastra arenicola. Stride. Avicula 



Dark gntty Sandstone contorta, Por«. Saurichthys apicalis, 



contaming fishes teeth ^^_ Gyrolepis Alberti, Ag. Sar- 

 and pyrites [^ godon tomicus, Plien. 



Black Shales, laminated... No fossils. 



Hard black Shale Bodies resembling Coprolites. 



Grey Marls of the Keuper. 

 Tlie Cote-d'Or specimens of this stage consisted of coarse- 

 grained Sandstones or Arkose, in wMch Pecten Valoniensis 

 and Cardium Rhceticum were conspicuous. I observed several 

 fragments of the Bone-bed recently found in the Department ; 

 its presence in this stage has likewise been indicated at Mont 

 d'Or, west of Lyons, from whence M. Foxjrnet* obtained a 

 Saurian tooth. The whole facies of this bed much resembled 

 the specimens from Garden Cliff, and other well known locaUties 

 in England, and it was interesting and instructive to observe 

 the great similarity subsisting between formations of the same 

 age, accumulated so widely apart as the shores of the Triassic 

 sea of the Cote-d'Or, and those in the centre of England, 



The following section was made by my friend R. Etheeidge, 

 Esq., F.E.S.E., to illustrate his paper on the Rhsetic beds of 

 Garden Cliff, which appeared in the transactions of the Cottes- 

 wold Club, for 1864. It is, by his kind permission, re-produced 

 here, as it gives all the details necessary for fully understanding 

 this most instructive river section. 



* Fournet, Geologie Lyonnaise, p. 141 -. 1861. 



