82 Report of the President 



The most important are a nearly complete skeleton of a car- 

 nivorous dinosaur, a partial skeleton of a new type of armored 

 dinosaur and the skull of a horned dinosaur. 



Cretaceous Preparation of these specimens is under way. A 

 Dinosaurs 



fine complete skeleton of the Crested Dinosaur 



Corythosaurus and a skeleton of a large carnivorous type have 

 been prepared as panel-mounts, and a third carnivorous dino- 

 saur skeleton has been partly prepared for exhibition. 



A fine skeleton of a long- jawed mastodon, Megabelodon, of 



the Pliocene epoch, has been purchased from Mr. Edward L. 



Troxell. It was discovered by him near Dallas, 



^Skeleton South Dakota > in ^9^7* and constitutes one of the 

 most important additions to our knowledge of the 

 extinct Proboscidea. 



The skeleton has been mounted and placed next to the War- 

 ren Mastodon in the Hall of the Age of Man. This is a fine 

 illustration of the peculiar kinds of Mastodons which inhabited 

 this country in the Tertiary period. Their remains though not 

 rare are mostly fragmentary, and this is the first skeleton of a 

 Tertiary mastodon in any museum in this country and the 

 second in the world. (The other is in the Paris Museum.) 

 This animal equaled the great American Mastodon in bulk but 

 had shorter legs and a very long lower jaw. The trunk was 

 probably supported beneath by the front of the jaw instead of 

 hanging free as in the short- jawed mastodons and elephants. 



A skeleton of the Fin-back reptile Dimetrodon, from the 

 Permian of Texas, has been obtained by purchase and a series 



of supplementary skeletons, of the same genus, 

 Permian, DUt j ess complete, has been presented by the 



collector, Mr. Charles H. Sternberg. A valuable 

 skeleton of a Pareiasaurian reptile from the Karroo formation 

 of South Africa has been obtained through the good offices 

 of Dr. Robert Broom. Mounting of three skeletons of 

 Moschops, commenced three years ago but interrupted for a 

 time, has been resumed. This animal is a large reptile from 

 the Karroo formation of South Africa, the group of skeletons 

 being a part of the Broom collection acquired by the Museum 



