18 THE CERATOPSIA 



MEXICO 



Locality 22 (Fig. 2) is in the state of Coahuila, north of Movano but south of the railroad run- 

 ning north from Soledad. The ceratopsian material found here consists of a right squamosal, a large 

 and a small caudal vertebra, a large section of a femur, and two undetermined fragments. It 

 was discovered by E. Haarmann in the Soledad layers, which he regards as contemporaneous with 

 the Lance. 13 Preserved in the University of Berlin. 



SOUTH AMERICA 



Von Huene gives us a possible ceratopsian locality in South America. 14 In 1918, A. Tapia dis- 

 covered a part of a mandible which Von Huene ascribes to the Ceratopsia under the name of Noto- 

 ceratofs bonarelli. It was found in the dinosaur layer, north of the outlet of Chico River, in the 

 southeast angle of Lake Colhue Huapi, district of Chubut, Argentine. The stratigraphical level is 

 below the upper marine Senonian. The actual specimen, however, seems too fragmentary for definite 

 determination. 



MONGOLIA 



The genus Protoceratops, found in Mongolia, presents the most complete fossil series of all 

 stages of a reptile's existence, from egg to adult and old age. The type specimen, No. 6251 

 A.M.N.H., was found in 1922 by Walter Granger and party, on the Kwei-wa-ting trail east of 

 Artsa Bogdo, in the Gobi desert, Mongolia, Lat. 44° N., Long. 1 04° E. The horizon is the Creta- 

 ceous Shamo series, Dja-doch-ta formation. Since that time the locality has yielded about 80 speci- 

 mens, many of them in almost perfect preservation of skull and skeleton, and grading from the very 

 small and youthful animals to the old adults. 



BRITISH COLUMBIA 



During the summer of 1930, C. M. Sternberg collected from the Peace River Canyon in British 

 Columbia a number of dinosaur tracks which correspond exceedingly well in size, posture, length of 

 stride, and morphology, with the known anatomy of some of the Ceratopsia, Monoclonius (Centro- 

 saurus), for instance. It seems possible, therefore, that the Ceratopsia had inhabited this region. 

 There is, however, a marked time discrepancy. The horizon of the tracks is correlated with the 

 lower Blairmore of about middle Lower Cretaceous age. The exact location of the footprints is in 

 the "Peace River Canyon, north side, about 1 1 / 2 miles upstream from Gething's mine, on a stratum 

 216 feet above Grant seam, Gething member of Bullhead Mountain formation." 



The type, No. 8556 G.S.C., consists of a plaster cast 15 of six tracks (two manus and two pes of 

 the left side and one each from the right side), and has been called Tetrapodosaurus borealis, as 

 described by C. M. Sternberg. 10 



13 See Janensch, W., 1926, pp. 192-197. 



14 Huene, F. von., 1929, pp. 147-149. 



15 Original could not be removed from the locality. 

 10 Sternberg, C. M., 1932, pp. 73-74. 



