EQUIVALENCE OF BEDS IN EASTERN AND PLAINS PROVINCES 229 



position of the entire flora proves to be of so young a character as the material 

 described or placed in my hands by Mr. Sellards, his conclusion that the beds 

 are of so late date as the Lower Permian will appear to be fully justified. I am 

 not informed whether any of the gymnospermic species so important in, and so 

 typically characteristic of, the Permian of Europe or Prince Edward Island are 

 present in Kansas. However, such pteridophytic material as has come to me 

 for examination is more nearly typical and characteristic of the Permian than 

 any flora that I have yet seen from another formation in the United States. 



"If the plants preliminarily listed above are representative of the plant life 

 of the Upper Marion or the Wellington formation, the flora of these beds is 

 probably of a date fully as late as the earlier of the floras generally referred to 

 the Permian in western Europe. In any event a flora containing these species 

 can hardly be older than the topmost Carboniferous, or transitional from the 

 Upper Carboniferous to the Permian." 



A. EVIDENCE OF FOSSIL INSECTS AS TO EQUIVALENCE OF THE 



PERMO-CARBONIFEROUS BEDS IN THE EASTERN AND 



THE PLAINS PROVINCES. 



Sellards published the results of his investigations on the insects of the 

 late Paleozoic of Kansas in a series of papers which appeared in the American 

 Journal of Science during the years 1906, 1907, and 1909.^ 



The insects described in these papers came from a locality about 3.5 

 miles southeast of Banner City, Dickinson County, Kansas. The insects 

 occur, with fossil plants, in a fine-grained, laminated limestone associated 

 with a hard concretionary limestone. This limestone belongs in the Welling- 

 ton horizon and lies directly beneath the Cretaceous in this locality. In- 

 cluding doubtful forms, there are more than 60 species described, with 35 

 genera, all of which are new. The cockroaches from this locality, described 

 elsewhere,^ add 10 species and 2 genera, one of which is new. The larger 

 groups represented are: 



Odonata, i genus and species. 



Plectoptera, 10 genera and 13 species. Handlirsch has recognized ephemerids as 



occurring sparingly in the Permian of Russia. 

 Megasecoptera, i specimen. 

 Oryctoblattinidae, 2 genera. 



Protorthoptera, 20 genera, 43 species. _ . 



Paleoblattida;, 2 genera, 10 species. The rarity of cockroaches is a peculiarity of 



this locality. 



From the Birmingham shale of the Conemaugh series from near Steuben- 

 ville and Richmond, Ohio, there were obtained 22 species, belonging to 3 

 genera, of cockroaches; no other insects were found at this place. Only 

 one of the genera from Birmingham shale has been found at the Kansas 

 locality and not one of the species; the two other genera, however, have 



'Sellards, E. H., Types of Permian Insects, Amer. Jour. Sci. ,vols. xxni, xxvn, 1906, 1907 

 1909. Correlation of the Insect-bearing Horizon, in part in, p. 169. 



2 Sellards, E. H., Cockroaches of the Kansas Coal Measures and the Kansas Permian, 

 University of Kansas Geological Survey, vol. ix, p. 501, 1908. 



