Figure 5 from: Smith N (2011) Taxonomic revision and phylogenetic analysis of the flightless Mancallinae (Aves, Pan-Alcidae). ZooKeys 91: 1-116. https://doi.org/10.3897/zookeys.91.709

Figure 5 - Line drawings for comparison of Mancallinae proximal humeri in posterior view (not to scale). A Miomancalla wetmorei B Miomancalla howardi C Mancalla californiensis D Mancalla cedrosensis E Mancalla vegrandis F Mancalla lucasi. Anatomical abbreviations: ms mancalline scar pf1 primary pneumotricipital fossa sc supracoracoidal crest vt ventral tubercle.