EQUIVALENCE OF BEDS IN EASTERN AND PLAINS PROVINCES 



223 



An annotated list giving the synonymy and exact location of each 

 species is given on pages 392 to 429 of the same publication. Of this list 

 D. White says: 



"The floras of the Conemaugh have had but little study and their differentia- 

 tion from those of the Monongahela, on the one hand, or from those of the 

 Allegheny on the other, is therefore at present very incomplete. The composition 

 and characteristics of the plant life of the Monongahela are also but little under- 

 stood, though it is known that the floras contain much that is present in, though 

 not peculiar to, the Dunkard (basal Permian)." 



As noted above (page 66), D. White has reported the occurrence of a 

 species of Callipteris, a genus diagnostic of the Permian, recently discovered 

 in the upper half of the Conemaugh. 



The best summary of the plants of the Plains Province has been given 

 by David White^ in his description of the characters and relationships of the 

 genus Gigantopteris, which he regards as not closely related to any known 

 Paleozoic type: 



"Its nearest, though perhaps very distant, relatives are, I believe, to be 

 found in the fossils described by Morris as Pecopteris goepperti, really a Callipteris, 

 from the Permian sandstones near Bielebei in the Urals." 



Following are the lists of plants given by White from the beds of Texas, 

 Oklahoma, Kansas, and Colorado. The forms marked with an asterisk (*) 

 are characteristic Permian or Permo-Carboniferous species. 



"Preliminary List of the Fossils from the Main Plant Bed (M) [in the breaks of the Little Wichita, 4.5 

 miles southeast of Fulda] and 'Castle Hollow' (H) near Fulda, Texas: 



Diplothema sp. ? M. 

 Pecopteris arborescens, H. 

 Pecopteris hemitelioides, H, M. 

 Pecopteris densifolia?, H. 

 Pecopteris tenuinervis, M. 

 Pecopteris grandifolia, M, H.? 

 Pecopteris, sp., M. 

 Aphlebia, sp., H. 

 *Odontopteris neuropteroides, M. 

 *Odontopteris fischeri? M. 

 *Gigantopteris americana, M, H. 

 Neuropteris cf. lindahli, H. 

 Neuropteris cordata?, M. 

 *Taeniopteris multinervis, H, M. 

 *Taeniopteris abnormis, M. 

 *Taeniopteris coriacea?, M. 

 Taeniopteris, new species, M. 

 *Annularia spicata, H. 

 *Annularia? maxima, M. 



*Sphenophyllum obovatum, M. 

 Sphenophyllum?, sp., H. 

 Sigillaria, sp., M. 

 *Sigillariostrobus hastatus, H. 

 Cordaites cf. principalis, M. 

 *Poacordaites cf. tenuifolius, M. 

 *Walchia piniformis, M. 

 *Walchia schneideri?, H. 

 *Gomphostrobus bifidus, H. 

 *Gomphostrobus? sp., M. 

 Aspidiopsis, sp., M. 

 *Araucarites, new species, M, H. 

 Carpolithes, sp., H. 

 Insect wings, M. 

 Anthracosia, M. 

 Estheria, M. H. 

 Ostracods, M. H. 

 Fish scales, M. H. 



"Provisional list of fossil plants from Perry (P) and Eddy (E), Oklahoma: 



Diplothema pachyderma, E. *Odontopteris ch. permiensis, E. 



Pecopteris cyathea, P. Neuropteris, sp., E. 



*Pecopteris geinitzi, P. *Taeniopteris multinervis, P, E. 



*Callipteris, sp., E. *Taeniopteris abnormis, P. 



*Gigantopteris americana, E. P. *Taeniopteris, sp., E. 



^ White, David, The Characters of the Fossil Plant Gigantopteris Schenk and Its Occurrence 

 in North America, Proceedings U, S. National Museum, vol. 41, p. 493, 1915. 



