Darton, N.H. (1928). ""Red Beds" and associated formations in New Mexico, with an outline of the geology of the state". United States Geological Survey Bulletin. 794: 59. doi:10.3133/b794. hdl:2346/66033.
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Darton, N.H. (1928). ""Red Beds" and associated formations in New Mexico, with an outline of the geology of the state". United States Geological Survey Bulletin. 794: 59. doi:10.3133/b794. hdl:2346/66033.