Template:Matsuoka & Hasegawa, 2022

• Matsuoka, H. & Hasegawa, Y. 2022. Annakacygna, a new genus for two remarkable flightless swans (Aves, Anatidae, Cygnini) from the Miocene of Gunma, central Japan: With a note on the birds’ food niche shift and specialization of wings for parental care actions. Bulletin of Gunma Museum of Natural History 26: 1–30. PDF  
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Nomenclatural acts

• Date of publication: 2022

New names (2)

• Annakacygna gen. nov. [p. 3]
• Annakacygna hajimei sp. nov. [p. 3]
• Annakacygna yoshiiensis sp. nov. [p. 11]