English: Red sandstones and siltstones of the Shumaysi Formation are truncated by channels of quartz pebble conglomerate and occasionally bands of ironstone. Saudi Geological Survey geologist Mohammad Ali examines the Shumaysi Formation near the Saadanius hijazensis fossil locality. Photograph by Iyad S. Zalmout, University of Michigan Museum of Paleontology.
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{{Information |Description={{en|1=Red sandstones and siltstones of the Shumaysi Formation are truncated by channels of quartz pebble conglomerate and occasionally bands of ironstone. Saudi Geological Survey geologist Mohammad Ali examines the Shumaysi For