Fig. 5 in The Fossil Waterfowl (Aves: Anseriformes) from the Eocene of England

Fig. 5. Additional fossil material referred to Headonornis hantoniensis (BMNH PAL 6240). A, right proximal humerus in caudal view; B, cranial view; C, referred distal end of left humerus in cranial view (BMNH PAL 5105). Characters based on the hypothesis of Ericson (1999) are labeled. Scale bars are 5 mm. Abbreviations as follows: a, incisura capitis humeri; b, impression of M. scapulohumeralis cranialis; c, tuberculum supracondylare ventrale; d, epicondylus dorsalis.