Class Aves | Phylum Chordata Genus Cygnus | |
Similar New Zealand swan, Cygnus falconeri, Coscoroba swan, Black‑necked swan, Trumpeter swan | ||
Cygnus paloregonus is a fossil swan. It is an ancestor distantly allied to the mute swan. It is known from the Pleistocene from Fossil Lake, Oregon, Froman's Ferry, Idaho and from Arizona. It is referred to by Hildegarde Howard in Delacour's The Waterfowl of the World as "probably the mute type swan".
References
Cygnus paloregonus Wikipedia(Text) CC BY-SA