A NEW RESTORATION OF TRICERATOPS, WITH NOTES 

 ON THE OSTEOLOGY OF THE GENUS. 



By Charles W. Gilmore, 



Associate Curator, Division of Paleontology, United States National Museum. 



INTRODUCTION. 



The life appearance of Triceratops has been depicted by numerous 

 paintings and by at least three model restorations. During the years 

 that have passed since most of these restorations were prepared, the 

 discovery of many new specimens and especially of well-preserved 

 skin impressions has added greatly to our knowledge of the probable 

 life appearance of the horned dinosaurs. The accompanying pho- 

 tographic reproduction, made from a recently prepared model, aims 

 to embody all of the evidence of recent discoveries and also to express 

 my conception of this animal in the flesh. (See pi. 3.) 



The model is based upon the mounted skeleton^ in the United 

 States National Museum made to one-fourteenth the linear dimen- 

 sions of the original skeleton. It will be noticed that the head is 

 quite different from the skull on the skeleton and in explanation 

 it should be said that the skull and lower jaws on the mounted 

 specimen pertain to a different individual than the axial and appen- 

 dicular portions, but that with the latter was found a single large 

 horn-core which was identified by the late Mr. J. B. Hatcher as 

 resembling the horn-cores of Triccratops elatus Marsh, and on ac- 

 count of that resemblance, I have selected the skull of that species 

 as the basis for the head in the present model. 



The nonimbricating, scalelike texture of the skin as represented 

 in the model is based, with modifications, upon the recently dis- 

 covered Ceratopsian remains in the collections of the Canadian Geo- 

 logical Survey, at Ottawa, with which well-preserved skin impres- 

 sions were found.^ Although these skin impressions pertain to one 

 of the more primitive Ceratopsians it is quite reasonable to expect 

 that all of the horned dinosaurs had a scaled integument, though 



1 Gilmore, Charles W., Proc. U. S. Nat. Mus., vol. 29, 1905, pis. 1 and 2, pp. 433-435. 

 a Lambe, L. M., Ottawa Naturalist, vol. 27, 1914, p. 132, pi. 14. 



Proceedings U. S. National Museum, Vol. 55— No. 2260. 

 62055— 20— Proc.N.M. Vol .55 8 97 



