Group: Chinle

Members: unnamed (20), Duke Ranch (3), Quay (2), Red Peak (1), San Jon Creek (1), Wallace Ranch (1)

Lithologies: not reported (21), claystone (1), mudstone (2), siltstone (3), sandstone (1), conglomerate (4), "limestone" (1)

Paleoenvironments: terrestrial indet. (3), channel lag (1), "floodplain" (1), crevasse splay (1), fluvial-deltaic indet. (1), lacustrine - large (19), lacustrine - small (1), lacustrine indet. (1)