Group: Maquoketa

Formations: unnamed (1), Brainard (4), Brainard Shale (3), Elgin (1), Fort Atkinson (7), Fort Atkinson Limestone (3), Maquoketa (1), Neda (2), Scales (4), Scales Shale (22)

Members: unnamed (7), basal (1), Brainard (4), Clermont (4), Elgin (7)

Lithologies: not reported (5), "shale" (29), wackestone (5), grainstone (2), "limestone" (36), dolomite (6), phosphorite (1)

Paleoenvironments: marine indet. (8), carbonate indet. (45), shallow subtidal indet. (7), deep subtidal ramp (2), deep subtidal shelf (1), deep subtidal indet. (1), offshore indet. (2), offshore (1)