. . . . "Onnia"@en . "*O. cobboldi\n*O. goldfussi\n*O. gracilis\n*O. superba\n*O. vysocanensis"@en . "late Ordovician"@en . "Onnia is a genus of trilobite from the late Ordovician of Africa, Europe, North America, and South America."@en . "Arthropoda"@en . "Onnia"@en . "Onnia"@en . . . . "Animalia"@en . "Onnia is a genus of trilobite from the late Ordovician of Africa, Europe, North America, and South America."@en . . . . . .