148 CHARLES S. PROSSER 



Broili's monograph is followed by L. Neumayer's paper on the 

 coprolites of the Texas Permian, which form a part of the above- 

 mentioned collections.^ 



Professor Case has spent considerable time in studying the stratig- 

 raphy and fauna of the Red Beds of northern central Texas and has 

 published several papers relating to the subject. One is entitled 

 "The Character of the Wichita and Clear Fork Divisions of the 

 Permian Red Beds of Texas."^ The last one is called "A Great 

 Permian Delta and Its Vertebrate Life, with Restorations by the 

 Author."^ A slightly earlier one is "On the Value of the Evidence 

 Furnished by Vertebrate Fossils of the Age of Certain So-called 

 Permian Beds of America. "^ In this paper the vertebrate evidence 

 concerning the age of certain beds in Illinois and Texas is considered 

 and the author's conclusions are as follows: 



1. The evidence from vertebrates is not sufficient to demonstrate the Permian 

 age of the beds in Illinois and Texas, they may reach down into the Carboniferous 

 or they may extend upward into the Triassic. 



2. There is no unlikelihood that reptilian life began in the Carboniferous. 

 The evidence is rather affirmative than otherwise. 



It is becoming more and more evident from the vertebrate paleontology that 

 the Red Beds of North America and their eastern equivalents represent an 

 enormous interval of emergence which may well have begun while Carboniferous 

 (Pennsylvanian) forms still lingered in the waters and have continued until 

 Triassic types were well established. s 



The last paper dealing with the stratigraphy of this part of Texas 

 was read by Professor C. H. Gordon at the Baltimore meeting and 

 was entitled "The Red Beds of the Wichita-Brazoo Region of North 

 Texas." He stated that — 



formations to which the names Wichita and Clear Fork have been given, when 

 traced along their strike toward the southwest, are found to grade into those 

 included under the terms Cisco and Albany. The former have been regarded as 

 Permian, while the latter have usually been assigned to the Pennsylvanian. Some 

 authors, however, have suggested that the Albany should be considered Permo- 



1 Palaeontographica, Vol. LI, 1904, pp. 121-28, PI. XIV. 



2 Am. Mus. Nat. Hist., Vol. XXIII, 1907, p. 659. 

 3-Pop. Sci. Month., Dec. 1908, p. 557. 



^Joiir. GeoL, Vol. XVI, Sept. -Oct., 1908, p. 572. 

 s Ibid., p. 580. 



