TYPE SPECIMENS OF PALEOZOIC FOSSILS 5 



For ease of use it has been the purpose to keep these divisions as broad 

 as practicable, in order to avoid duplicating too often the alphabetic 

 arrangement of the species and to maintain the elasticity of the scheme 

 in the incorporation of future additions. The work does not purport to 

 be one on taxonomy, but aims to present the arrangement in the simplest 

 form. During the progress of the printing of the catalogue, a period of 

 18 months, the continuous publication of paleontologic researches and 

 acquisitions to the collections by gift and purchase have notably increased 

 the number of type specimens and these have been added in a supple- 

 mentary list brought up to February 1903. 



While the main part of the book is devoted to the biologic arrange- 

 ment of the type material, a second part gives a concise relisting of the 

 species in their stratigraphic arrangement. 



A chief purpose of this record is to make available to students the 

 card catalogue of these types now in the possession of the museum. At 

 the same time, it serves to indicate the wealth of the museum in these 

 important elements, of which upward of 5000 are here listed, a number 

 which exceeds all type specimens of paleozoic organisms from the New 

 York rocks in the possession of all other collections taken together. 



John M. Clarke 



Albany N. Y. 17 Ap. 1903 State Paleontologist 



CORRIGENDA 



Under *$* 2d line; for p. 131 read p. 191 



" 2^, 6th line ; for fig, 5 read fig. 5, 6 

 Page 24, for**,* 1 read ? v" 

 Under :i -Y °, 9th line ; for Near read New 



« •8 fl ff0 > ^d line; for fig. 2 read fig. 1 



" 8 V ff » 3^ line; for fig. i read fig. 2 



" A3-A* insert New Scotland beds Near Clarksville N. Y. 



« &&£!. f or Stictopora investis read Stktopora invertis 



" - 7 --., 1 °. 2d line; for no. 49 read no. 45 

 Page 307 ; &: l/^ and *¥& arc the same specimen 



Page 358, lines 13, 27, 29, 3] and 34; lor Aviculopectcn read Actin- 

 optaia 



Page 602; dele i-**-. Type in the American museum of natural 

 history, New York N. Y. 



