ANTHRACOLITHIC ROCKS OF KANSAS 155 



This conclusion drawn from the plant fossils is now fully confirmed by the 

 evidence derived from the insects.^ 



Dr. Sellards also describes a flora from the Wreford limestone 

 concerning which he writes as follows: 



A good deal of interest is attached to the discovery of plants in the Wreford 

 limestone, especially as this formation has been recently regarded as the base 

 of the Permian in Kansas. Nine species have been obtained from this locality 

 as follows: Baiera sp., Callipteris conferta, Callipteris sp., Cardiocarpon sp., 

 Carpolithes sp., Cordaites sp., Rhabdocarpus sp., Sigillaria sp., Walchia pinni- 

 jormis. The collection obtained from this formation is small and comes from 

 a single locality near Reece, Kan. The association of the flora so far as obtained 

 is with Wellington rather than with Coal Measures flora. The presence of 

 Walchia in abundance, and of callipterid ferns, along with the small species of 

 seeds common to the Wellington, together with the absence, so far as yet noted, 

 of all of the common Coal Measures species, gives the flora of the Wreford, as 

 developed at Reece, a distinctive Permian facies. 



Coal Measures species, although rare in the collection obtained from the 

 Wreford limestone at the Reece locality, recur in some abundance in the horizon 

 at Washington, regarded by Beede as near the top of the Chase formation. ^ 



At the Baltimore meeting, December 31, 1908, Dr. Beede presented 

 a most important paper on the "Relationships of the Pennsylvanian 

 and Permian Faunas of Kansas and Their Correlation with Similar 

 Faunas of the Urals." He stated that "owing to physical changes 

 which occurred during the close of Pennsylvanian time, there occurred 

 a great reduction of Pennsylvanian species, followed by the intro- 

 duction of Permian species. This introduction of new species 

 becomes very noticeable in the Elmdale formation and its base is 

 considered the base of the Kansas Permian. "^ 



Since the above was written the writer has received the May-June 

 number of the Journal of Geology in which appears the correlation 

 paper on the "Upper Carboniferous" by George H. Girty* followed 

 by the one on " The Upper Paleozoic Floras, Their Succession and 

 Range," by David White,^ both of which were read at the Baltimore 



1 Op. cit., p. 173. Also see Univ. Geol. Surv. Kansas, Vol. IX, 1908 [1909], 

 p. 463. 



2 Ihid., Vol. IX, pp. 463, 464. 



3 Science, N. S., Vol. XXIX, April 16, 1909, p. 637. Also see ibid., May 7, 

 1909, p. 752. 



4 Op. cit.. Vol. XVII, July, 1909, pp. 305-20. s Hid., pp. 320-42. 



