"115247518"^^ . . . . "period"^^ . . "114386219"@en-us . "a unit of geological time during which a system of rocks formed; \"ganoid fishes swarmed during the earlier geological periods\""@en-us . . . "15247518-n"^^ . "geological period"@en-us . . . . . "0"^^ . "a unit of geological time during which a system of rocks formed; \"ganoid fishes swarmed during the earlier geological periods\""@en-us . . . . "110954173"@en-us . "0"^^ . "period"@en-us .