Hereford, R. Supplemental material: Chino Valley Formation (Cambrian?) in northwestern Arizona GSA Data Repository Item 7512, GSA Bulletin, Vol. 86, p. 677. File size: 4 p., about 195 K bytes. Geoscience 1975-01-01
    https://gsapubs.figshare.com/articles/journal_contribution/Supplemental_material_Chino_Valley_Formation_Cambrian_in_northwestern_Arizona/12333395
10.1130/7512