Fossil and modern penguin tarsometatarsi: cavities, vascularity, and resilience
Piotr JADWISZCZAK,
Ashley KRÜGER,
Thomas MÖRS
Abstract:Penguin tarsometatarsi are shortened and flattened, and studies devoted to the internal characteristics of these composite bones are very limited. Therefore, we present here a comprehensive, x‐ray‐microscopy‐based analysis based on tarsometatarsi of Eocene stem Sphenisciformes from Seymour Island (Antarctic Peninsula) as well as recent Aptenodytes forsteri, A. patagonicus, and Pygoscelis adeliae penguins. Our study focuses on four aspects: size variability of the medullary cavities, vascularization patterns wi… Show more
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