Classification of Jehl 1967
G. Melanitta Boie 1822 [scoter]
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Melanitta deglandi Bonaparte 1850 [white-winged scoter]
G. Aechmophorus Coues 1862
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Aechmophorus occidentalis Lawrence 1858 [western grebe]
Fulica americana Gmelin 1789 [American coot]
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G. Dendragapus Elliot 1864
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†Dendragapus gilli Shufeldt 1891
Invalid names: Palaeotetrix Shufeldt 1891 [synonym]