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THE AMERICAN MUSEUM JOURNAL 



of the Armored Amphibians, Eryops (Fig. 2), Diplocaulus (Figs. 3, 4), 

 Cricotus (Fig. 5), and others, and a series of sknlls and other parts of 

 the Solid-skulled Reptiles or Cotylosaurians. 



It soon became evident that this wonderful fauna would well repay 



an energetic search for additional 

 and more complete specimens, 

 therefore in 1902 the Museum 

 sent Mr. C. H. Sternberg, and in 

 1900 and 1908 Dr. E. C. Case, 

 into the Texas fossil field. These 

 expeditions made valuable addi- 

 tions to the Permian collections. 

 In particular, Dr. Case succeeded 

 in 1906 in obtaining skeletons of 

 the Spine-Backed Lizard Dimc- 

 irodon (Fig. 1 ) and the large solid- 

 skulled (Cotylosaurian) reptile 

 Diadectes, much more complete 

 than any previously known. The 

 first specimen has been placed on exhibition as a panel mount, the other 

 is now under preparation. The most important specimen obtained by 

 Dr. Case last year was a fine skull of Diadectes. By persistent and 



FIG. 4. SKULL OF ARMORED AMPHIBIAN 

 DIPLOCAULUS. 



Cope Permian Collection, presented by 

 Morris K. .Jesup. 



FIG. 5. SKELETONS OF THE ARMORED AMPHIBIAN CRICOTUS. 

 Cope Permian Collection, jjresented by Morris K. Jesup. 



thorough exploration of this and other Permian fossil fields we may ex- 

 pect to obtain a large series of skeletons of these strangest and least 

 known of all our fossil vertebrates. 



The scientific value of these specimens can hardly be overrated. 



