"Bilton Coal [Obsolete: use BICO]"@en . "322.0"^^ . "Obsolete name. Coal. Stratified bedrock. Occurs onshore. Deposited during the Kinderscoutian Substage (Carboniferous Period) (322-321.5 Ma BP)."@en . . . "321.5"^^ . "[Obsolete: use BICO]"@en . . "BILC"@en . "Bilton Coal Beds"@en . . . . "Bilton Coal [Obsolete: use BICO]"@en . . . "archaic"@en .