. . . ","@en . . . . "Racine Dolomite"@en . "43133756"^^ . . "1096247246"^^ . . . . . . . . "Silurian"@en . . . . . . . "Racine Dolomite"@en . "The Racine Dolomite is a geologic formation in Illinois and Wisconsin. It preserves fossils dating back to the Silurian period."@en . "The Racine Dolomite is a geologic formation in Illinois and Wisconsin. It preserves fossils dating back to the Silurian period."@en . . . . . . . . . "1354"^^ . .