The Fossil Beds of Alberta. 209 



work in a payment, five-to-seven-sided figures, or rounded in 

 shape, often two inches in diameter, with many closely 

 crowded, small six-sided scales, down to mere tubercles, as a 

 background for the ornamental ones. They are not imbricated 

 or overlapped; each scale is distinct, almost touching the 

 edges of the ones opposite. The head was the largest part of 

 the creature, and the crest behind nearly covered the small 

 body. One skull is mounted at Ottawa and the other rapidly 

 approaching completion. 



Charlie and I secured two fine skulls of another strange 

 form, which Mr. Lambe calls Centrosaurus, but Brown re- 

 tains the name Cope gave the form he found in Montana 

 in 1878, namely Monocloriius. By the way, I went with two 

 other members of the Geological Survey to the Judith river 

 of Montana in 1914, and went over the field I had explored 

 with Professor Cope in 1876, and from incontestible evi- 

 dence was forced to the conclusion that the Judith river 

 beds of Montana are identical with those of the Belly river 

 series of the Red Deer river of Alberta. These huge skulls 

 had small round openings, across which lay bundles of os- 

 sified tendons, resembling horns. These were likely bony 

 tendons, strong and elastic, used to move the lower jaws. 

 A pair of recurved horn cores in the central line of the 

 crest behind are also characteristic of this great dinosaur, 

 nearly as large as Triceratops. We have mounted two fine 

 skulls in Ottawa. Charlie's specimen, though somewhat 

 crushed, reveals distinctly every bone that goes to make up 

 the head. 



Charlie also found the magnificent skull of the trichodont, 

 which George Sternberg mounted for the Survey. Mr. Lambe 

 considers this new, and calls it Grypsosaurus. It closely re- 

 sembles Brown's Kritosaurus, from New Mexico. This skull 

 is the most perfect of any of the trachodont family. It is 

 of huge proportions, with high quadrates and exceedingly 

 high nasals. These help to form a large Roman nose. Still 

 another species of the trachodonts was discovered, and is evi- 

 dently new. Levi prepared it last winter, and I expected to 

 see it described. It was described, however, by Mr. Brown 

 from a much poorer specimen. He calls it Prosaurolophus, a 

 name indicating it to be an ancestor of the Saurolophus, which 

 he described from the Edmonton beds. Last summer I found 



14_Sci. Acad.— 2163 



