Annakacygna (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Annakacygna" in English language version.

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doi.org

Watanabe, Junya (2017). "Quantitative discrimination of flightlessness in fossil Anatidae from skeletal proportions". The Auk. 134 (3): 672–695. doi:10.1642/AUK-17-23.1. hdl:2433/227150.

handle.net

hdl.handle.net

Watanabe, Junya (2017). "Quantitative discrimination of flightlessness in fossil Anatidae from skeletal proportions". The Auk. 134 (3): 672–695. doi:10.1642/AUK-17-23.1. hdl:2433/227150.

pref.gunma.jp

gmnh.pref.gunma.jp

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 action" (PDF). Bulletin of Gunma Museum of Natural History. 26: 1–30.