. . "Silurian"@en . . . "1347"^^ . "1096255795"^^ . . . "Somerset Island Formation"@en . . "Somerset Island Formation"@en . "43316520"^^ . . . . . . . . . . "The Somerset Island Formation is a geologic formation in Northwest Territories. It preserves fossils dating back to the Silurian period."@en . . . . "The Somerset Island Formation is a geologic formation in Northwest Territories. It preserves fossils dating back to the Silurian period."@en . . . . . . . . . . . . .