Fig. 2 in New cranial material of the earliest filter feeding flamingo Harrisonavis croizeti (Aves, Phoenicopteridae) informs the evolution of the highly specialized filter feeding apparatus

Fig. 2 Skull of Harrisonavis croizeti (Gervais 1852), from the Late Oligocene of the Auvergne region in central France, compared with the extinct Palaelodus ambiguus and extant Phoenicopterus roseus and Phoenicoparrus minor in dorsal, ventral, and occipital views. P. ambiguus (ML StG 60) in dorsal (a), ventral (b), and occipital (i) views. H. croizeti (ML StG 203bis) in dorsal (c), ventral (d), and occipital (j) views. P. roseus in dorsal (e), ventral (f), and occipital (k) views. P. minor in dorsal (g), ventral (h), and occipital (l) views. cl os palatina, crista lateralis; cm os palatine, crista medialis; cn crista nuchalis; ct crista tomialis; cv os palatine, crista ventralis; fgn fossa glandularis nasalis; fo fonticulus occipitalis; mk maxillary keel; ppa processus paroccipitalis; ppo processus postorbitalis. Scale bars 1 cm