314 W. T. LEE MORRISON A CRETACEOUS FORMATION 



7. T. C Chamberliu : The shelf -seas of the Paleozoic and their relations to 

 diastrophism and time divisions. Congres Geologique International, 

 Xlle session, Canada, 1913, pages 539-553, 1914. 



S. W. T. Lee : Coal fields of Grand Mesa and the West Elk Mountains, Colo- 

 rado. U. S. Geological Survey Bulletin 510, 1912. 



9. Whitman Cross and E. S. Larsen : Contributions to the stratigraphy of 

 southwestern Colorado. U. S. Geological Survey Professional Paper 

 90-E, 1914, page 44. 



10. AV. T. Lee: Morrison shales of southern Colorado and northern New Mex- 



ico. Journal of Geology, volume x, 1902. 



11. Whitman Cro.ss and E. S. Larsen: The stratigraphic break below the Ju- 



rassic sandstone in southwestern Colorado. Journal of the Washing- 

 ton Academy of Science, volume iv, 1914. 



12. Whitman Cross: U. S. Geological Survey Geological Atlas, Pikes Peak 



Folio (No. 7), 1894. 



13. R. C. Hills: U. S. Geological Survey Geological Atlas, Walsenburg Folio 



(No. 68), 1900. 



14. T. W. Stanton : Succession and distribution of later Mesozoic invertebrate 



faunas in North America. Journal of Geology, volume xvii, number 5, 

 1909, pages 410-423. 



15. W. T. Lee : The Manzano group of the Rio Grande Valley, New Mexico. 



U. S. Geological Survey Bulletin 389, 1909. 



16. W. T. Lee: Stratigraphy of the coal fields of northern central New Mex- 



ico. Bulletin of the Geological Society of America, volume 23. 1912. 



17. T. W. Stanton : The Morrison formation and its relation with the Co- 



manche series and the Dakota formation. Journal of Geology, vol- 

 ume xiii, 1905, pages 657-669. 



18. C. A. Fisher: Geology of the Great Falls coal field, Montana. U. S. Geo- 



logical Survey Bulletin 365, 1909. 



19. C. T. Lupton : Geology and coal resources of Castle Valley, Utah. U. S. 



Geological Survey Bulletin (in manuscript). 



20. G. W. Stose: U. S. Geological Survey Geological Atlas, Apishapa Folio 



(No. 186), 1912. 



21. Charles Schuchert : The delineation of the geologic periods illustrated by 



the paleogeography of North America. Congres Geologique Interna- 

 tional, Xlle session, Canada, 1913, pages 555-592, 1914. 



22. W. T. Lee : Relation of the Cretaceous formations to the Rocky Mountains 



in Colorado and New Mexico. U. S. Geological Survey Professional 

 Paper 95-C, pages 27-58, 1915. 



