. "Mawsoniidae is an extinct family of prehistoric coelacanth fishes which lived during the Triassic to Cretaceous period. Image:Mantell's Iguanodon restoration.jpg This article is a . You can help My English Wiki by expanding it."@en . . . . "Mawsoniidae is an extinct family of prehistoric coelacanth fishes which lived during the Triassic to Cretaceous period. Image:Mantell's Iguanodon restoration.jpg This article is a . You can help My English Wiki by expanding it."@en . . . . . . "Mawsoniidae"@en . . .