deserta Zelenkov 2012 †Cygnopterus alphonsi Cheneval 1984 [non Cygnavus senckenbergi Mlíkovský 2002] †Helonetta brodkorbi Emslie 1992 †Loxornis clivus...

†Bonibernicla ponderosa Kuročkin 1985 Genus †Cygnavus Lambrecht 1931 †Cygnavus senckenbergi Lambrecht 1931 †Cygnavus formosus Korochkin 1968 Genus †Cygnopterus...

†Eonessa anaticula Wetmore 1938 (Middle Eocene) †Cygnavus (Early Oligocene – Early Miocene) †C. senckenbergi Lambrecht 1931 †C. formosus Korochkin 1968 †Cygnopterus...