170 D. WHITE — RELATIVE AGES OF KANAWHA-ALLEGHENY SERIES 



here a normal association of the identical and characteristic forms of 

 the Allegheny series — a typical Allegheny Mora. 



It is not within the scope of this paper to more precisely discuss the 

 equivalence in the Pennsylvanian section of the several Kanawha ter- 

 ra ncs. It is, however, proper to add that the absence of the higher 

 Pecopterids, the presence of certain phases of the species, certain older 

 elements, as well as the proportion and range of the identical forms, 

 bespeak for the Stockton flora a place probably not higher than the 

 Clarion group in the Allegheny series. It seems very improbable that 

 it can in any event he so high as the Upper Kittanning. 



Floras succeeding the Kanawha Formation 

 plants less than 200 feet above the " black flint " 



As bearing upon the question of the position of the Stockton flora in 

 the Pennsylvania section, while further showing the occurrence of the 

 typical Pennsylvania floras, it is of interest to glance at the floras suc- 

 ceeding the Stockton in the southern West Virginia section. I therefore 

 append three lists of plants from higher horizons in the same section. 



The first of these floras, from localities* which Mr Campbell informs 

 me lie within 200 feet above the Black Flint is as follows : 



Name. Locality. 



Pseudopecopteris obtusiloba (Sternb.) Lx Wayne. 



squamosa (Lx.),f large Clen., Wayne. 



Mdriopteris sillimanni (Lx.)f Gr. , Wayne. 



nervosa (Brongn.) Zeill Wayne, Liz. 



" newberryi (Lx.)| Clen. 



Sj>h< nopteris solida Lx.f Wayne. 



" clucropfiylloides (Brongn.) Presl f Clen. 



" mixta Schimp.f Wayne, Liz. 



" ophloglossoides (Lx.)t Clen., Cob., Wayne, Liz. 



Pecopteris emarginata (Goepp.) Presl f Cob., P. R. 



unita Brongn. f Clen., Wayne, Liz. 



" solida Lx.f Clen. 



" villosa Brongn.? f Gr., Clen., Cob. ,Wayne,Liz. 



" vestita Lx.f Clen. 



" oreopteridla (Schloth.) Sternb. t Gr.? 



" cf. jenneyi D. W.f Wayne. 



11 miltoni (Artis) ? f • P. R., Wayne. 



♦ The collections here roughly listed are Graham mine, Mason (Gr.); along the Elk river, one 

 mile above Clendennin (Clen.); Cob mine, near Clendennin (Cob.) ; from an horizon about 200 

 feet above the Black Flint, one-half mile east of Pleasant Retreat (P. R.) ; Left fork of Mill creek, 

 Wayne county (Wayne); south of summit on Belva and Lizemore road (Liz.) ; Gunter hollow, 

 near .Mason (G. H.). 



f Forms apparently identical with those in the Allegheny series. 





