in.".-! 



DR R, KIDSTON. MR T. C. CANTRILL, AND MR E. E. L. DIXON. 



phyttum emarginatum Brongt., though it extends down to the Black Band Group, 

 has not been found in a lower horizon in Britain. It is particularly common, how- 

 ever, in the Radstockian Series. Alethopteris lonchitica Schl. sp., though recorded 

 from the Radstockian, has only been met with there on a single occasion,* but is one 

 of the most common Westphalian and Lanarkian species. 



The admixture of Radstockian and Westphalian species in the shales associated 

 with the "Sulphur Coal Group" places it, as pointed out by Dr Arber, in the 

 Staffordian Series. 



The next question that falls to be considered is to which group of the Staffordian 

 is the " Sulphur Coal " Group to be referred. 



The fossil flora of the Staffordian Series is still very imperfectly known — much 

 more so than that of any of the other divisions of the Upper Carboniferous. The 

 following table, however, shows, as far as at present known, the distribution of the 

 Forest of Wyre species in the three groups into which the series is divisible : — 



Fossil Plants of the Staffordian Series of the Forest of 

 Wyre Coal Field. 



Newcastle- 



under-Lyme 



Group. 



Etruria 



Marl 



Group. 



Black 



Band 



Group. 



Sphenopteris neuropteroides Bonlay sp. . 









Pecopteris Miltoni Artis sp. . 











X 







X 



,, (Cyat/teites) sp. . 











X 





.. 



X 



Dactylofheca plumosa Artis sp. . 











... 







X 



Odontopteris Liudleyana Sternb. . 











... 









Neuropteris ovata Hofim. .... 











X 









,, tenuifolia Schl. sp. . 

















X 



,, rarinervis Bunbury 











X 







X 



,, flexuosa Sternb. . 

















X 



„ Scheuchzeri Hoffm. 











X 





X 



X 



,, Osmundx Artis sp. . 















. , 





,, macrophylla Brongt. . 



















Alethopteris lonchitica Schl. sp. 











X 







X 



„ aquilina Schl. sp. 











X 









„ Serli Brongt. sp. 











X 





.. 





Catamites Suckowi Brongt. 











X 







X 



,, % Cisii Brongt. 

















X 



Asterophyllites equisetiformis Schl. sp. . 











X 





.. 



X 



Sphenophyllum cuneifolium Sternb. sp. . 

















X 



„ emartjinatum Brongt. 











X 







X 



Lepidodendron aculeatum Sternb. . 



















,, dichotomum (1 Sternb.) Zeiller 











X 





.. • 





„ lanceolatum Lesqx. 

















... 



,, Wortheni Lesqx. 

















X 



Lepidostrohus variabilis L. & H. 











X 









Lepidophy/lum lanceolatum L. &. H. 











X 









Stigmaria ficoides Sternb. sp. 











X 







X 



Qordaites sp. ..... 











... 







... 



Cordaianthus duhius Grand'Eury . 



















» S P 



Artisia approximata Brongt. sp. 



















K/233. 



