PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued B^?NvA, Q?l^l h ihe 



SMITHSONIAN INSTITUTION 

 U. S. NATIONAL MUSEUM 



Vol. 83 Washington: 1935 No. 2978 



ON THE REPTILIA OF THE KIRTLAND FORMATION OF 

 NEW MEXICO, WITH DESCRIPTIONS OF NEW SPECIES 

 OF FOSSIL TURTLES 



By Charles W. Gilmore 



Curator, Division of Vertebrate Pahontologij, United States National Museum 



The present paper records the results of a study of a small 

 collection of reptilian specimens in the United States National Mu- 

 seum from the Kirtland formation of New Mexico. It is a third 

 contribution on this subject, as I have considered this fauna in two 

 previous articles (Gilmore, 1916 and 1920). The materials were 

 acquired (1) by a field party from the National Museum working 

 under my direction, which spent the summer of 1929 collecting in the 

 San Juan Basin; (2) by purchase of a small lot of turtles from C. H. 

 Sternberg collected in 1923; and (3) by gifts from individuals or by 

 transfer from the United States Geological Survey of a small but 

 varied assortment of specimens. Study of these shows the presence 

 of several new species of turtles, and other well-preserved specimens 

 contribute to a better understanding of forms previously known. 



The recovery of additional though incomplete dinosaurian spec- 

 mens is of interest in showing the presence of forms other than those 

 previously reported. It is proposed to review briefly those dino- 

 saurian species that are now in other museums but that have been 

 described since the appearance of my 1920 paper. Thus all the new 

 information relating to the extinct vertebrate fauna of the Kirtland 

 formation is brought together in this one article. 



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