Report of Investigations No. 284, "Depositional history and stratigraphic evolution of the Upper Wilcox Group and Reklaw Formation, northern Bee County, Texas" is a detailed study of the upper Wilcox and Reklaw stratigraphic succession in a 190-mi2 (~490-km2) area along the upper Wilcox shelf margin in northern Bee County, Texas. By interpreting and mapping 19 high-frequency, fourth-order regressive-transgressive sequences, it demonstrates that the upper Wilcox to Reklaw succession contains greater variability in depositional systems, facies, and reservoir sandstone-body geometry than previously documented.