Aves - Anseriformes - Anatidae
Alternative spelling: Aythyinae
Parent taxon: Anatinae according to J. Gonzalez et al. 2009
See also Brodkorb 1964, del Hoyo et al. 2014, Emslie 1992, Mlíkovsky and Svec 1986, Olson and Rasmussen 2001, Wetmore 1956, Worthy and Nguyen 2020, Zelenkov 2012 and Zelenkov 2017
Sister taxa: Aix, Anatini, Awengkere, Bambolinetta, Cairinini, Chaulelasmus, Chenonetta, Helonetta, Hymenolaimini, Mergini, Nettion, Presbychen, Querquedula, Sarkidiornis, Tadorini, Tadornini, Wasonaka
Subtaxa: Aythya Pteronetta
Ecology: volant herbivore
Distribution:
• Quaternary of East Timor (1 collection), Egypt (3), Greece (3), Italy (5), Jordan (1), Mexico (6), New Zealand (4), Panama (1), Reunion (1), Romania (1), the Russian Federation (5), Spain (3), the United Kingdom (2), United States (49: Alabama, California, Colorado, Florida, Georgia, Michigan, New Mexico, Ohio, Oregon, Wyoming)
• Blancan of United States (1: Florida)
• Pliocene of United States (1: North Carolina)
• Miocene of China (1)
Total: 88 collections including 124 occurrences