Caprina Limestone Beds. 101 



discovered a fauna in what is jiow known to be the Ca})rina 

 limestone in the bhifts of the Colorado, a few miles west of 

 Austin. Not knowing the horizon of these beds, he sent them to 

 Dr. C. A. White, of the United States Geological Survey, and 

 Dr. Ferdinand Roemer, at Breslau. Dr. White described sev- 

 eral of the forms of aljerrant CJiamida'., but owing to the lack of 

 stratigraphie particulars he refrained from publishing any age 

 conclusions.-'- Dr. Roemer ])ublishedt beautiful illustrations of 

 these fossils and described them with his accustomed skill, liut 

 at that time, not knowing the comprehensive character of the 

 beds in the innnediate vicinity of Austin and jjrobalily deceived 

 l)y the lithologic resemblance of the matrix, he erroneously con- 

 cluded that they came from the Austin chalk (Niobrara) of the 

 I'Pper Cretaceous. His conclusions that the Austin chalk from 

 which he supposed these fossils to have come was of Turonien 

 age was undoubtedly correct. The Austin chalk a1)0unds hi 

 many other si)ecies which justify such a conclusion, but not one 

 of these species later described warranted such a conclusion, 

 nor did they come from that horizon. The writer regrets that 

 he is unable here to rei:)ublish Dr. Roemer's excellent figures 

 and descriptions of this fauna. 



The following is a list of the species which I have observed 

 from the Rudistes horizon in the Cajnina limestone beds at Aus- 

 tin, Texas : 



Parasmilia austiiiensi-s Roemer. 

 Pleurocora texana Roemer. 

 Pleiirocora coalescens Roemer. 

 Clad(yphyllia farcifera Roemer. 

 Coelosmilia aniericann Roemer. 

 Holectypus Roemer. 

 PatcUa or P'deolus (?). 

 Chrysostomn. 



Helicocryptus or Adcorhis. 

 Ziziph III IIS ( CaUiostoma). 

 Nerhica ausiinensis Roemer. 

 Ncriiiea cidtrispira Roemer. 



* Bulletin 4, U. S. Geological Survey, on Mesozoic fo^siln, by C. A. White, 

 Washington, 188-i. 



t Paleontologische Aljhamllungen Herausgegeben von W. Dames unci 

 E. Kayser, Vierter Band. Heft 4. Ueber eine Durch die Haeufigkeit 

 Ilippuriten-Artiger Chamiden Ausgezeichnete Fauna der Oberturonen 

 Kreide von Texas von Ferdinand Roemer. Mit 3 Tafeln. Berlin, 1888. 



