108 Cretaceous. 



falcatus; from the Black Butte saurian bed, Vtbernum dichotomum; 

 from the Black Butte red baked shale, Quercus ^oyominganus; from 

 Evanstou, Calycites liexaphylla^ Carpolithes arachioides, now Legum- 

 inosites arachioides; from Elk creek, near Yellowstone river, Carpo- 

 lithes osseus; from six miles above Spring canon, near Fort Ellis, 

 Abies setigera and Nyssa Lanceolata. 



He described, from the Dakota Group, six miles south of Fort 

 Harker, Kansas, Hymenophyllnm cretaceum, CauUnites spinosus, 

 Populites fagifoUa, Ficus sternbergi, now Persea sternbergi^ Sassa- 

 fras mirabile, 8. recurvatiim^ 4iow Platanus recurvata, 8. harker- 

 anum, now Cissites harkeranus, Laurophyllum reticulatum, Pteros- 

 permites sternbergi, now ProtophyUitm sternbergi; from nine miles 

 above Saliua in the Saline Valley, Kansas, Populites salinoi^ now Men- 

 ispermites salinensis, P. affinis, now C issites affims, and Pterospermites 

 rugosus, now Protophyllum rugosum. 



Prof Meek* said that the coal -bearing rocks at Coalville, Utah, are 

 undoubtedly of Cretaceous age, as he had from the first maintained, 

 and he quoted in support of this view his remarks in Dr. Hayden's 

 Report of 1870, page 299. He prepared a section running from the 

 principal coal-bed, near Coalville, in a northwesterly direction, to Echo 

 canon, a distance, b}^ a right line a little obliquely across the strike of 

 the rocks, of about three and a half miles. This section commences 

 393 feet below the heavy bed of coal, and furnishes a thickness of 

 3,980 feet below the conglomerate, or including the conglomerate, which 

 is here 700 feet in thickness, 4,680 feet of strata. Several parts of 

 this section contain marine Cretaceous fossils, the highest of which is 

 gray, soft, sandstone, 30 feet in thickness, and 1,431 feet below the con- 

 glomerate. It contains many large Inoceramus, Ostrea and Cardium^ 



The conglomerate not only composes the towering walls of Echo 

 canon at places forming perpendicular, or even overhanging escarp- 

 ments, 500 to 800 feet in height, but also rises into mountain masses 

 on the west side of Weber river, near the mouth of the canon. It 

 probably attains a thickness in places of 2,000 feet. This he referred 

 to Tertiary age because of its position above the Cretaceous, its non- 

 conformability with the rocks below it, and its remarkably coarse 

 material. 



*6th Rep. Hayden's U. S. Geo. Sur. Terr. 



