. . . . . . . . . . . . . . . "Silurian"@en . . "1719"^^ . "Henryhouse Formation"@en . "Henryhouse Creek, Carter County, Oklahoma"@en . "43255113"^^ . . . "1096213926"^^ . . "The Henryhouse Formation is a geologic formation in Oklahoma. It preserves fossils dating back to the Silurian period."@en . . . . . "Henryhouse Formation"@en . "The Henryhouse Formation is a geologic formation in Oklahoma. It preserves fossils dating back to the Silurian period."@en . . . . . . . . . "Chester A. Reeds, 1911"@en . . . . .