. . . "Symmoriida"@en . . . . "Symmoriida is an extinct order of sharks that contains three families: Symmoriidae, Falcatidae, and Stethacanthidae. Image:Mantell's Iguanodon restoration.jpg This article is a . You can help My English Wiki by expanding it."@en . . "Symmoriida is an extinct order of sharks that contains three families: Symmoriidae, Falcatidae, and Stethacanthidae. Image:Mantell's Iguanodon restoration.jpg This article is a . You can help My English Wiki by expanding it."@en .