Kritsky & Thatcher 1977. Phanerothecium gen. nov. and Fundulotrema gen. nov. two new genera of viviparous Monogenoidea (Gyrodactylidae), with a description of P. caballeroi sp. nov. and a key to the subfamilies and genera of the family. Universidad Nacional Autonoma de Mexico Instituto de Biologia Publicaciones Especiales, 4 1977: 53-60