PREFACE. 



The purpose of this bibliograpt^ and catalogue is to present a list 

 of all the species of fossil vertebrates which have been described, 

 up to the end of the year 1900, from all that part of the continent of 

 North America lying north of Mexico, and to furnish a guide to the 

 literature relating to all these extinct forms of organized beings. The 

 number of species is so great and the literature describing them is so 

 vast and so widely scattered that even the experts in the science of 

 vertebrate paleontology have great difficulty in making and keeping 

 themselves fulry informed as to what has already been done and what 

 is being done. It is hoped that this work will relieve students of 

 much tedious and often unavailing search. 



This bulletin may be said to consist of three parts: First, a bibliog- 

 raphy which contains the titles of all the books, memoirs, and papers, 

 extended or brief, w r hich the author has been able to consult and which 

 have appeared to him to have a useful bearing on the subject; second, 

 a systematically arranged list of all the species of fossil vertebrates 

 which have been described from the region above indicated; third, an 

 index, alphabetical ly arranged, of all the systematic names occurring 

 in the volume. 



In the bibliography there are given about 4,600 titles. Accompany- 

 ing each is a statement of the number of pages occupied by the work 

 and the number of plates or figures. If the memoir or paper is found 

 in some serial publication, the name of this is given together with the 

 volume and pages. All of the titles have been obtained through actual 

 examination of the scientific journals. In the case of many of these 

 the search has been made page by page, since the indexes are so often 

 deficient that they can not be wholly relied on. The end in view 

 throughout has been to find all that the paleontologist will need in his 

 work and to give correct citations. 



The titles of works and papers are given under the names of the 

 authors, and these authors' names are presented in alphabetical order. 

 Each author's papers are arranged in the sequence of the } T ears of pub- 

 lication. Each title is preceded by the author's name, the year of 

 publication, and a letter of the alphabet, A, B, C, etc., according to 

 the number of papers published during that year, as "Leidy, J., 1868 

 A," "1868 B" to "1868 J." If an author has issued more than 26 



