812 MR ROBERT KIDSTON ON THE FOSSIL PLANTS OF 



Measures, which has hitherto only been discovered in the Middle and Lower Coal 

 Measures (where, however, it is extremely rare), does not vitiate the conclusions arrived 

 at in regard to the age of this portion of the Red Shales specially under consideration, 

 but merely shows that Lepidodendron fusiforme is one of those species which extends 

 throughout the whole of the Coal Measures, as several of the Lepidodendra do. It is 

 also the only plant discovered at Jockie's Syke which had not previously been found in 

 the Upper Coal Measures of other areas. 



The Fossil Plants from that portion of the Carboniferous Limestone Series of 

 Northumberland and Cumberland, which is the Geological Equivalent 



OF A PORTION OF THE CaLCIFEROUS SANDSTONE SERIES OF SCOTLAND. 



Rhodea moravica, Ett. , sp. 



The great majority of the specimens on which the following list is founded were 

 collected by Mr John Rhodes, Fossil Collector to the Geological Survey of England. 

 A few additional specimens were also collected by the late Mr Hugh Miller while 

 surveying in the district under consideration, and by Mr A. Macconochie of the 

 Scotch Geological Survey. A list of the plants contained in these collections was 

 prepared in 1886, but was laid aside at the time. It is now published, with a few 

 additions, with the double object of recording the fossil j)kmts which occur in the 

 Calciferous Sandstone series of the North of England, and also for the purpose of 

 comparing them with those from the Calciferous Sandstone series of Dumfriesshire. 



The relative positions of the geological horizons mentioned are shown in the 

 following table of classification, supplied by Mr C. T. Clough, in which the highest 

 horizon is placed at the top. 



Calcareous Division. 



Scremerston, or Carbonaceous Division. 



Fell Sandstones. 



Cementstone Series ( = Ballagan Series) and Rothbury Limestones. 

 All these groups certainly belong to the Calciferous Sandstone Series of Scotland. 



