12 THE CERATOPSIA 



Chasmosaurus belli, No. 5402 A.M.N.H., skull with jaw and parts of skeleton, collected in 1913 by 

 the American Museum of Natural History, in Township 2 1 , Range 1 2, about 1 mile below 

 Steveville, on the left bank of the river. 



Chasmosaurus belli, No. 5499, R.O.M., skull and complete skeleton, collected by the Royal Ontario 

 Museum in 1926, 2 miles south of Steveville on the southeast side of the river. Mounted. 



Chasmosaurus brevirostris, type, No. 5436, R.O.M., skull and part of skeleton, collected by the Royal 

 Ontario Museum in 1926, 3 miles south of Steveville on the west side of the river. 



Chasmosaurus belli, paratype, No. 2245 G.S.C., skull and most of skeleton, collected by C. H. Stern- 

 berg in 1913, 3 l / 2 miles south of Steveville. Mounted in the National Museum of Canada. 



Chasmosaurus belli, No. 2280 G.S.C., skull and most of skeleton, collected by C. H. Sternberg in 

 1914, I 1 /?, miles southeast of the mouth of Little Sandhill Creek. Mounted in the National 

 Museum of Canada. 



Chasmosaurus belli, type, No. 491 G.S.C., parietal, collected by L. M. Lambe in 1898, on the 

 east side of the river, below the mouth of Berry Creek. 



Chasmosaurus sp., skull and lower jaws, and a few bones of the skeleton, collected by C. M. Stern- 

 berg in 1928 on the west side of the river, 3 miles south of Steveville. In the National 

 Museum of Canada. 



Chasmosaurus belli, No. 2016 Y.P.M., skull without lower jaws, collected by C. M. Sternberg in 



1919, on the south side of the west branch of Little Sandhill Creek, 60 feet below the overlying 

 Pierre shales. At Yale Peabody Museum. 



Chasmosaurus belli, skull, collected by the Royal Ontario Museum in 1930, on the southwest side 

 of the river 6 miles north of Denhart. (Sent to Buenos Aires.) 



Chasmosaurus sp., dentaries, maxillae, nose, right side of face nearly to orbits, and part of skeleton, 

 collected by C. M. Sternberg in 1919 about 3 miles south of the mouth of Little Sandhill Creek. 

 In the National Museum of Canada. 



Chasmosaurus sp., 2 incomplete skulls, collected by C. H. Sternberg in 1915 from the lower end of 

 Dead Lodge Canyon about 1 5 miles east of Steveville. In the National Museum of Canada. 



Ceratopsian, No. 5407 A.M.N.H., orbital horns; No. 5408 A.M.N.H., vertebrae; No. 5410 

 A.M.N.H., ilium; No. 5415 A.M.N.H., maxilla and jaw; No. 5416 A.M.N.H., jaw. Col- 

 lected in 1913 by the American Museum of Natural History about 1 mile below Steveville 

 on the left bank of the river. 



Ceratopsian, No. 5422 A.M.N.H., skull and parts of skeleton; No. 5425 A.M.N.H., skull; No. 

 5437 A.M.N.H., skull; No. 5439 A.M.N.H., brain case; No. 5342 A.M.N.H., fragmen- 

 tary skull. The last was collected in 1914, the remaining specimens in 1913, all from the banks 

 of Sand Creek about 12 miles below Steveville. 



Ceratopsian, No. 5374 A.M.N.H., frill of skull, collected by the American Museum of Natural 

 History in 1915 from the "East Fork" of Sand Creek, about 12 miles below Steveville. 



Eoceratops canadensis, type, No. 1254 G.S.C., skull, collected by Lambe in 1901 on the east side of 

 the river, a short distance below the mouth of Berry Creek. 



Chasmosaurus, No. 40 University of Alberta, nearly complete skull, collected by G. F. Sternberg in 



1920, 2 miles southeast and 1 mile east of the mouth of Sand Creek. 



Monoclonius flexus, type, No. 5239 A.M.N.H., skull, collected in 1912 about 1 mile below Steve- 

 ville on the left bank of the river. 



Monoclonius dawsoni, type, No. 1 173 G.S.C., fragmentary skull, collected by Lambe in 1901 on the 

 river, between Berry Creek and Dead Lodge Canyon. 



Monoclonius, No. 5442 A.M.N.H., skull, collected in 1913 about 30 miles below Steveville, near 

 the junction of the Pierre and Belly River formations (Section 15, Township 22). 



Monoclonius crassus, central portion of crest, collected by C. M. Sternberg in 1917, 3 miles south- 

 west of the mouth of Little Sandhill Creek. In the National Museum of Canada. 



Monoclonius flexus, No. 5341 A.M.N.H. (No. 2015 Y.P.M.), skull and skeleton collected by the 

 American Museum of Natural History in 1914, about 2 miles from the mouth of Sand Creek, 

 12 miles below Steveville. Mounted in the Yale Peabody Museum. 



