Presbyornithidae, Taxa Only, Exact Match: 2 Treatments

Headonornis hantoniensis			DYKE, GARETH J., 2001, The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England, American Museum Novitates 3354, pp. 1-16 : 5-9	5-9
Headonornis			DYKE, GARETH J., 2001, The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England, American Museum Novitates 3354, pp. 1-16 : 5	5