Summary: | Fig. 25. Coracoids of selected penguin taxa, illustrating phylogenetic characters: (A) the stem penguin Archaeospheniscus lowei (OM GL407); (B) extant Aptenodytes forsteri (AMNH 3767). The bone is incomplete in A, causing the proximal end to appear less widened. Broken edges suggest that the coracoid fenestra was originally completely enclosed in A. Scale bars 5 1 cm. See appendix 5 for abbreviations. Published as part of Ksepka, Daniel T. & Clarke, Julia A., 2010, The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record, pp. 1-77 in Bulletin of the American Museum of Natural History 2010 (337) on page 62, DOI:10.1206/653.1, http://zenodo.org/record/10112083
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