. Annual report of the United States Geological Survey to the Secretary of the Interior . ? munsoni. S. peruvianus. Engonoeeras sp., Turrltella,Pecten, Holectypus, Toxaster, E. texana,G. marcoui. marcoui. U. marcoui, E. Fig. 12.—Section of slopes of Paluxy Valley from top of Comanche Peak, Hood County, to Glen Rose,Somervell County. (For explanation of lettering see PI. XVI, p. 110.) 152 BLACK AND GRAND PRAIRIES, TEXAS. extending arm of the Western Cross Timbers, continues irregularlysouthward from its junction with the main belt of the Western CrossTimbers in Wise Count
. Annual report of the United States Geological Survey to the Secretary of the Interior . ? munsoni. S. peruvianus. Engonoeeras sp., Turrltella,Pecten, Holectypus, Toxaster, E. texana,G. marcoui. marcoui. U. marcoui, E. Fig. 12.—Section of slopes of Paluxy Valley from top of Comanche Peak, Hood County, to Glen Rose,Somervell County. (For explanation of lettering see PI. XVI, p. 110.) 152 BLACK AND GRAND PRAIRIES, TEXAS. extending arm of the Western Cross Timbers, continues irregularlysouthward from its junction with the main belt of the Western CrossTimbers in Wise County, to the Leon. Hence in that portion of theirextent wht ic they are overlain by the Paluxy sands, the outcrops of theGlen Rose formation constitute prairie spots within the general areaof the Western Cross Timbers, as seen between Weatherford andMillsap, on the Texas Pacific road, and in the slopes below the escarp-ment of Comanche Peak in Hood, Erath, and Somervell of the Cowhouse, where the Paluxy sands terminate, the out-crops of the Glen Eose beds are prairie lands continuous with those ofthe Walnut clays. The inlying valley outcrops increase in area southward throughParker, Hood, Erath, Comanche. Lampasas, and C
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