1. Subsurface geology of Paleozoic, Mesozoic, and Cenozoic units in southeast Missouri Yale Public content 1988. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Missouri. Paleozoic, Mesozoic, and Cenozoic.