10 University of Kansas Geological Survey. 



knew where to find the information. Nothing whatever has 

 ^been published by the state that will aid the student in his re- 

 searches. Many of the fossils of our state have been described 

 in scattered and voluminous reports, that can be found only in 

 those libraries that especially collect such works. For several 

 years past the writer has been gathering the literature concern- 

 ing Kansas paleontology, either in his own private library or 

 in the library of the University. The value of the literature 

 consulted in the preparation of the present volume is at least 

 $1000. No better reason can be given for the need of such re- 

 ports as the present. More important still is the fact that a 

 large part of the present volume is composed of information 

 here published for the first time, and which must necessarily be 

 otherwise accessible only to the investigator who has the dis- 

 position and time to devote years of study to the work. Very 

 many high schools and other institutions of the state have speci- 

 mens or collections of fossils, whose value at the present time is 

 very slight, since a very incomplete knowledge or total ignorance 

 of what they are prevents their use as means of education or 

 instruction ; and it is one of the chief hopes of the writer that 

 the present work will stimulate many of the young people of 

 our state to an intelligent interest in its geology as based upon 

 the study of its fossils. 



The material treated in the present work is believed to be 

 fairly complete. The work is in no sense a preliminary one, 

 but one that is hoped will not need revision for many years to 

 come. 



The reader may find accessible in the preceding volumes of 

 this series much of interest and value regarding the physical 

 features of the state. The different formations have been 

 mapped out, so far as the paleontologist has defined them. The 

 formations and localities of the economic products have been, 

 so far as possible, made known. But the general student wishes 

 also to learn something himself of the facts upon which these 

 results are largely based. 



The writer has been engaged for the larger part of twelve 

 years in the study of the geology and paleontology of the state. 



