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Forty-three species of trilobites belonging to 28 genera, 12 species of brachiopods belonging to 8 genera, and one species of gastropod are described from the Morgan Creek, Point Peak, and San Saba members of the Wilberns formation in the Llano uplift. Systematic descriptions include one new trilobite genus: Stigmacephaloides (type, S. curvabilis, n. sp.); six other new trilobite species: Monocheilus truncatus, Rasettia magna, Parabolinoides granulosus, Conaspis masonensis, C. testudinatus,doi:10.26153/tsw/4931 fatcat:xfc2y6wuqjdhtah3vh22baun44