THE KARROO SYSTEM 193 



and Calvinia, as impressions left in the shale of the 

 White band by the removal of the animal's bones. Well- 

 preserved fish remains have also been obtained from 'this 

 horizon in Calvinia. The list of fossils is as follows : 



f Plants 



Lepidodendron australe, 1 McCoy. 

 j 'Reptilia 



Mesosaurus tenuidens, 2 Gervaif. 

 Upper Shales J M ' pl*oga*ter* Seeley. 



M. capensis, 4 Giirich. 

 I Crustacea 



Probably Anthrapalcemon, sp. 

 Fishes 



Elonichthys, sp. 

 Tillite- 



Gangamopteris, sp. 5 

 Lower Shales 



Phyllotheca, sp. 



2. THE ECCA SERIES. 



Lying conformably upon the Upper Dwyka shales 

 throughout Cape Colony is the group of shales and sand- 

 stones called the Ecca beds, a name given them by 

 Atherstone from their occurrence in the Ecca Pass 

 north of Grahamstown. It is worth while noting here 

 that the term has been employed in a somewhat differ- 

 ent sense by certain geologists in the Transvaal and 



1 A. C. Seward, G. M., p. 484, 1907. 



2 P. Gervais, Description dn Mesosaurus tenuidens, Montpellier, 

 1865. 



: 'H. Seeley, Q. J". G. S., p. 586, 1892. 



4 R. Broom, T. S. A. P. S., xv., p. 103, 1904 ; A. S. A. M., iv., pt. 8, 

 1908. 



G. C., xii., p. 182. 



13 



