Gymnura

(syn. Oxyura Ϯ Ruddy Duck O. jamaicensis) Gr. γυμνος gumnos  bare, stripped; ουρα oura  tail; "Subgenus. - *GYMNURA.  (OXYURA Ϯ. Bonap.)  ...  Tail long and cuneiform, consisting of 20 narrow, pointed, rigid, and more or less concave feathers: the tail coverts wholly wanting, or undistinguishable from the adjoining plumage.  ...  ϮThe name of Oxyura having been previously employed for a subgenus of Creepers, it was necessary to alter it." (Nuttall 1834).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 16 December 2018).