﻿Vol. 6 1.] 



UPPER PORTION OF THE COAL-MEASURES. 



31' 



Table of the Distribution op the Plants in the 

 Keele, etc. Groups (continued). 



Species. 



I. 



Keele 

 Group. 



II. 



Newcastle 

 Group. 



III. 



Etruria 

 Group. 



IV. 



Black- 

 band 

 Group. 



7!" 



* 

 -X 







-* 



# 



(?) 





Sigillaria ichthyolejpis, Sternb 





Sigillaria tesseliata, Brongn . (?) 



Sigillaria sp 



Cyperites bicarinata, L. & H 





Cordaites angulosostriatus, Grand'Eury . . . 

 Cordaites borassifolius (Sternb.) 



Cordaites principalis (Germar) 



Trigonocarpus Parkinsoni, Brongn 



Bhabdocarpus sulcatus (Presl ) 



Artisia approximate, Brongn 



Walchia imbricata, Schimper 





If the distribution of the species recorded from these four sub- 

 divisions be analysed, it will be found that of the 29 species 

 observed in the Keele Group, all have previously been found in 

 the Upper Coal-Measures, except Lejndodendron fusiforme (Corda), 

 Sigillaria tesseliata, Brongn. (?), and Cordaites borassifolius(Sternb.). 

 The former, like a few other species of Lepidodendron, extends 

 throughout all the divisions of the Coal-Measures, while the latter 

 occurs at the very base of the Keele Group. Neuropteris hetero- 

 pliylla, Brongn., has not previously been found in Britain at so high 

 a horizon, but it has been recorded by Prof. Zeiller from the Lower 

 Series of the Upper Coal-Measures. 1 As yet, only a single specimen 

 has been collected from the Keele Group. Sigillaria tesseliata (?) 

 is also new to the Upper Coal-Measures, for the specimens that I 

 formerly recorded from the Badstock Series under this name are 

 Sigillaria cumulata, Weiss. 2 It is also noticeable that there is an 

 entire absence in the Keele Group of the small Sphenopterids and of 

 the Sigillarians generally, which are so characteristic of the Middle 

 Coal-Measures. These are always very rare in the Upper Coal- 

 Measures, and their absence is one of the characteristics of that 

 flora. 



On the other hand, the Keele Group contains many most typical 

 Upper Coal-Measure species, such as Pecopteris arborescens (Schl.), 

 P. cyathea (Schl.), P. unita, Brongn., Aletliopteris aquilina (Schl.), 



1 ' Bassin Houiller & Penmen d'Autun et d'Epinac : Ease. ii. Flore Fossile ' 

 pt. i (1890) p. 144 (Gites inineraux de la France). 



2 ' Die Sigillarien der preuss. Steinkohlengebiete : I. Die Gruppe der Favu- 

 larien ' Abhandl. d. Konigl.-Preuss. geol. Landesanst. vol. vii (1887) p. 255 

 & pi. ix (3) figs. 33-36. 



