296 D. WHITE— AGE OF LOWER COALS OF HENRY CO., MISSOURI. 



Distribution of the identical or closely related Species in the Divisions of the Coal Measures 



of Great Britain. 



Name of species. 

 (Related species in parentheses.) 



Excipulites callipterldis, (Schimp. ) Kidst. . . 

 Pseudopecopteris obtusiloba, (Brongn.) Lx. . . 



P. squamosa, (Lx.) 



Mariopteris cf. nervosa. 



(M. nervosa (Brongn.) Zeill.) 



M. sphenopteroides, (Lx.) Zeill. 



(M. acuta, (Brongn.) Zeill.) 



Mariopteris, sp. no v.* 



{Sphenopteris jacquoti, (Zeill.) Kidst.).. 



Sphenopteris mixta, Schimp 



S. lacoei, D. W. 



. (S. rotundifolia, Andrii) 



Sphenopteris, sp. nov.* 



(Hymenotheca dathei, Pot.). 



Sphenopteris, sp. nov.* 



(S. woodwardii, Kidst. ) 



S. pinnatifida, (Lx.) 



(S. quadridactylites, Gutb.) 



S. cristata, (Brongn.) Presl 



Sphenopteris subcrenulata, (Lx.) 



(Pecopteris crenulata, Brongn.) 



Oligocarpia, sp. nov.* 



( 0. brongniartii, Stur) 



Pecopteris, sp. nov.* 



(Sphenopteris stembergii, (Ett.) Weiss). 



Pecopteris erosa, Gutb 



P. dentata, Brongn 



P. cf. arborescens. 



(P. arborescens, (Schloth.) Brongn.). . . 

 P. hemitelioides, Brongn. (?) 



(P. arborescens (Schloth.) Brongn., var, 



thea, (Brongn.) Kidst.) "'. 



Pecopteris, sp. nov.* 



(P. oreopteridia, (Schloth.) Brongn.). . . 



candolleana, Brongn 



squamosa, Lx. 



(P. lamuriana, Hr.) 



P. vestita, Lx. 



(P. vlllosa, Brongn.) 



Aphlebia spinosa, (Lx.) . . 



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* Specific name omitted to avoid the publication of nomina nuda. 



