"Ktenoura"@en . . "175"^^ . . . . "Ktenoura"@en . "Ktenoura is a genus of trilobite from the Silurian of Europe."@en . . . . . "Animalia"@en . "Ktenoura"@en . . . "Ktenoura retrospinosa , on display at the Natural History Museum, London"@en . "Arthropoda"@en . "Ktenoura is a genus of trilobite from the Silurian of Europe."@en . .