Figure 22. Photograph of south-facing cliff of Mesa Portales (Figure 1, Figure 3, and FIgure 21). Photograph annotated to show relevant chronostratigraphic data, sample-collection localities, geologic contacts, and names of geologic rock units. A paleomagnetic traverse was made up the face of this exposure, angling from the lower left to just below base of upper Ojo Alamo Sandstone bench in shadowed area just left of labeled tree. Palynologic sample-collection sites and USGS paleobotany locality numbers, such as D 4017-A, are shown with arrowheads. Sample locations are approximate; however, stratigraphic levels are accurately placed. Palynomorphs identified from these collection localities are listed in Appendix.