Introduction 



By 

 Richard S. Boardman 



The Paleozoic cephalopod catalog is the first in a proposed series 

 listing invertebrate fossil type specimens of the Division of Invertebrate 

 Paleontology of the Smithsonian Institution. The only other published 

 catalog (Schuchert, 1905, USNM Bulletin 53, pt. 1) covered the entire 

 type collection of fossil invertebrates held at that time. Since 1905 the 

 type collections have grown from approximately 11,500 to nearly 200,000 

 (fig. 1). 



In compiling the cephalopod catalog all illustrated types were com- 

 pared with published pictures, and all of the nomenclature was rechecked. 

 This is necessarily a long and detailed task accomplished with meticu- 

 lous attention by Museum Specialist Louis R. Purnell, under the super- 

 vision of Erie G. Kauffman, Frederick J. Collier, and myself. All of the 

 Paleozoic cephalopod type specimens acquired through 1965 are listed. 



The Collection 



Specimens in the type collections include the primary types and sec- 

 ondary types designated in the literature. Designation can be by illus- 

 stration, or isolation in the text by measurement of other mention. Each 

 individually mentioned type specimen receives a separate catalog num- 

 ber. Primary or secondary types which have not received individual 

 designation are collected into occurrence suites and each suite is given 

 a catalog number. Kinds of primary types differentiated in the collection 

 include holotypes, syntypes, lectotypes, paratypes, paralectotypes, and 

 neotypes, as defined in articles 73-75 of the International Code of Zoo- 

 logical Nomenclature. Secondary types identified to species are gener- 

 ally termed hypotypes for curatorial purposes. Secondary types not 

 identified to species or identified with a degree of doubt are termed 

 simply figured or mentioned specimens. Plastotypes are cataloged and 

 placed in the type collections when illustrations, descriptions, or meas- 

 urement are based on the plastotype itself. Other plastotypes are in- 

 cluded in the type collection at the discretion of the curator. 



In addition to the type collection listed in this catalog, the division 



Curator-in-Charge, Division of Invertebrate Paleontology. 



