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THE AMERICAN MUSEUM JOURNAL 



of the Cretaceous age. Recently in the side of the canon five hundred feet 

 below the prairie surface, a few bones were discovered protruding from the 

 rocks which proved to be the spines of vertebra? and the skull of a nearly 

 complete skeleton. 



This skeleton presents characters strikingly distinct from related forms 

 and it has been made the type of a new genus Saurolophus (meaning " crested 



4 



The Saurolophus skeleton in the quarry, earth and surplus stone removed but not yet 

 plastered. It lay on the right side with skull still surrounded by ripple-marked sandstone 

 [near the observer]; the tail extending beyond the man's hand; feet and hind limbs nearer 

 the bank. The ribs on the upper side had been washed away during fossilization 



saurian") which is closely related to the well-known duck-bill Trachodon. 

 The new dinosaur is distinguished by a great bony crest on the back of the 

 skull which in life evidently supported a leathery lobe of skin similar to the 

 living lizard Basiliscus. Other distinctive characters are found in the hip 

 bones, the ischium of which resembles in general structure that of the 



