. "314.75"^^ . "Blackband Lingula Band"@en . . "BBLB"@en . . . "Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . "Blackband Lingula Band"@en . . "stable"@en . "318.0"^^ . . . .