THE 



AMERICAN NATURALIST 



Vol. XLIV May, 1910 No. 521 



A REVIEW OF ROME ItKOEN'T CRITICISMS OF 

 THE RESTORATIONS OF SAUROPOD DINO- 

 SAURS EXISTING IN THE MUSEUMS OF THE 

 UNITED STATES, WITH SPECIAL REFER- 

 ENCE TO THAT OF DIPLODOCUS CARNEGIEI 

 IN THE CARNEGIE MUSEUM 1 



DR. W. J. HOLLAND 

 Carnegie Museum 

 All, paleontologists are familiar with the figure of 

 Brontoxcnuits c.rcclsus Marsh, which was originally pub- 

 lished in the American Journal of Science in August, 

 1883, and republished with modifications in the same 

 periodical in 1895. This figure has since been frequently 

 reproduced in text-books. Paleontologists are also 

 familiar with the restoration of the skeleton of Diplo- 

 docus carnegiei Hatcher, which originally appeared in 

 the Memoirs of the Carnegie Museum, and is reproduced 

 in the second volume of the English translation of Zittel's 

 " Text-book of Paleontology," by C. R. Eastman. Since 

 the time when Mr. Hatcher made this restoration the 

 acquisition of new material has thrown much light upon 

 the subject, and certain changes in the pose have been 

 suggested, which are reflected in the accompanying illus- 

 tration (Plate I), which is taken from a photograph of 



1 The substance of this paper was communicated to the Annual Meeting 

 of the Paleontological Section of the Geological Society of America on 

 December 30, 1909. The paper at that time was freely illustrated by means 

 of the stereopticon, and a number of the pictures and diagrams then used 

 are herewith reproduced. 



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