682 W. T. LEE STRATIGRAPHY OF COAL FIELDS OF KEW MEXICO 



No. Date. 



are described as underlying red beds containing bones of Tricera- 

 tops, which suggest late Cretaceous age. Red beds of similar ap- 

 pearance near Cerrillos, New Mexico, known as Galisteo sand- 

 stone have also been regarded as late Cretaceous, and the cor- 

 relation of the two is suggested. 



105. 1907. Shaler, Mili^ved K. : A reconnaissance survey of the western part 



of the Durango-Gallup coal field of Colorado and New Mexico. 



U. S. Geol. Survey, Bull. no. 31G, pp. 37G-42(), 2 pis. 1907. 



The paper deals ^^'ith the geology of the western part of the 

 San Juan Basin. 



106. 1907. Sheeidan, Jo E. : Report of the mine inspector for the Territory 



of New Mexico to the Secretary of the Interior for the fiscal 

 year ended June 30, 1907. 



Washington, Government Printing Office, 1907, 48 pp. 



(Pp. 33-36) The coal beds of the Cerrillos and Hagan fields 

 are described. 



107. 1908. Campbell, M. R. : Coal fields of the United States. 



Map, with explanations. U. S. Geol. Surv. 1908. 



108. 1908. Jones, Fayette A. : Epitome of the economic geology of New 



Mexico. Published by direction of the New Mexico Bureau of 

 Immigration. 1908. 47 pp. 



Brief references are made to the coal beds. 



109. 1908. Shimee, H. W., and Blodgett, Mildeed E. : The stratigraphy of the 



Mount Taylor region, New Mexico. Am. Jour. Sci., 4th ser., vol. 

 ■25, pp. 53-67, 4 figs., January, 1908. 



This paper is a report on observations made in 1906 in the 

 Rio Puerco Valley south of Cabezon. 



(P. 54) The "Gastropod Zone" near the base of the Cretace- 

 ous; the "Concretion (Septaria) Zone" (near the Tres Hermanos 

 sandstone) and the "Cephalopod Zone" (near the top of the 

 Mancos) of Ilerrick and Johnson were recognized, but most of 

 the fossils collected are from the latter two zones, although one 

 fossil, Gryplicea newherryi Stanton, was found below the "Sep- 

 taria Zone." 



(P. 56) The following fossils of Benton age were collected 

 from the "Septaria Zone," about 8 miles southwest of Casa 

 Salazar: Placenticeras "i rotundatum Johnson; 'i PrionocycUis 

 icyominoensis Meek; Lima utahensis Stanton; Stantonoceras 

 stantoni Johnson; Seaphitcfi sp. ; TurrifclJa wliitei var. stantoni 

 S. and B. ; ? Ostrca liiyuhris Conrad. 



(P. 57) The "Septaria Zone" of these authors is said to dis- 

 appear under the surface a short distance north of Casa Salazar. 

 (This fixes its horizon near the base of the thick shale above the 

 Tres Hermanos sandstone.) 



(P. 57) About seven miles southwest of Cabezon (supposed to 

 be near the top of the Mancos shale), the following fossils were 

 collected: THponarca dcprc'^fia White: *Luci}m cf. suhundata 

 H. and M, ; *Pteria I'mgidformis (E. and S.) ; **SoJemya'i 



