NORTH AMERICAN PALEONTOLOGY FOR 1887 AND 1888. 



By Henry S. Williams. 



INTRODUCTION. 



In writing this report some modifications from the plan heretofore 

 adopted have been made. Tlie report attempts to consider only snch 

 works as refer to the Paleontology of North America. It has been 

 found impossible in the present state of the science to classify the lit- 

 erature on bi()logical lines entirely, as is done in the excellent Annuairo 

 G6ologiqne of Carez and Douvill(3 (22). I have consulted several re- 

 ports of a similar nature, from which I have adopted some suggestions. 

 Among these are the previous reports of Mr. Marcou (15(j, 157), the 

 geological record by Messrs. Whitaker and Dalton (277), by Messrs. 

 Topley and Sherborn (244), Bulletin No. 44 of the U. S. Geological Sur- 

 vey, by N. II. Barton (60) ; Les Progress de la Gdologie, by M. Margerie 

 (158) ; the Annuaire Geologique of Carez and Donvill6 (22), and the 

 preceding volumes of the same work by Dr. Dagincourt (57); the Neues 

 Jahrbuch of Messrs. Baur, Dames, and Liebisclie (11). 



One feature I have added which has not been attempted by any of 

 these publications so far as I have ascertained. I have quoted the names 

 of new species and genera proposed in the various publications, and in 

 each case have noted the page and, wherever illustrations have been 

 given, the number of the plate and figure, in order that the report may 

 bring before working paleontologists a list of the new species which 

 can be referred to when the original publications are not accessible. 



The reviews of the various publications have been necessarily brief, 

 and are printed separately from the bibliographical list. The contents 

 are arranged in the following order: 



General Paleontology: 

 Cambrian. 



Silurian, lower and upper. 

 Devonian. 



General Paleontology— Continued. 

 Carboniferous and Permian. 

 Mesozoic. 

 Ceuozoic. 



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