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We have also identified multiple blastoids (
Golconda formation - The Golconda formation is a limestone and shale succession that can be divided into three members (in ascending order): the Beech Creek limestone, Fraileys Shale, and Haney limestone. Outcrops are confined to northern Perry county, where the limestone beds in the Golconda are massive and form steep bluffs and ledges along the Mississippi river and its tributaries. Because the typical sandstone of the Cypress formation is absent in Missouri, there is a suggestion that an unconformity is present at the base of Golconda.
Beech Creek limestone member - The Beech Creek limestone member of the Golconda formation is a 5-20ft thick, dark-gray to brown limestone, which contains an abundance of foraminifera, small gastropods, and pelecypods.
Fraileys Shale member - The Fraileys Shale member of the Golconda formation 70-90ft thick, is composed of shale, which contains beds of dark-colored, crinoidal limestone.
Haney Limestone member - The Haney Limestone member of the Golconda formation is a 50-ft thick, very-light-gray, oolitic, crossbedded limestone.