Mourer-Chauviré, C.; Berthet, D.; Hugueney, M. (2004). The Late Oligocene birds of the Crechy quarry (Allier, France), with a description of two new genera (Aves: Pelecaniformes: Phalacrocoracidae, and Anseriformes: Anseranatidae). Senckenbergiana Lethaea, 84 (1-feb), 303-315
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Mourer-Chauviré, C.; Berthet, D.; Hugueney, M.
2004
The Late Oligocene birds of the Crechy quarry (Allier, France), with a description of two new genera (Aves: Pelecaniformes: Phalacrocoracidae, and Anseriformes: Anseranatidae).