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First report on quill pits in early penguins

  • Piotr Jadwiszczak (a1) and Thomas Mörs (a2)


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Clarke, J.A., Ksepka, D.T., Salas-Gismondi, R., Altamirano, A.J., Shawkey, M.D., D’Alba, L., Vinther, J., DeVries, T.J. & Baby, P. 2010. Fossil evidence for evolution of the shape and color of penguin feathers. Science, 330, 954957.
Edgington, G.H. & Miller, A.E. 1942. The Avian ulna: its quill-knobs. Proceedings of the Royal Society of Edinburgh, B61, 138148.
Hieronymus, T.L. 2015. Qualitative skeletal correlates of wing shape in extant birds (Aves: Neoaves). BMC Evolutionary Biology, 15, 303.
Jadwiszczak, P. 2009. Penguin past: the current state of knowledge. Polish Polar Research, 30, 328.
Jadwiszczak, P. 2010. New data on the appendicular skeleton and diversity of Eocene Antarctic penguins. In Nowakowski, D., ed., Morphology and systematics of fossil vertebrates. Wroclaw: DN Publishers, 4450.
Jadwiszczak, P. & Chapman, S.D. 2011. The earliest fossil record of a medium-sized penguin. Polish Polar Research, 32, 269277.
Mayr, G. 2004. Tertiary plotopterids (Aves, Plotopteridae) and a novel hypothesis on the phylogenetic relationships of penguins (Spheniscidae). Journal of Zoological Systematics and Evolutionary Research, 43, 6171.

First report on quill pits in early penguins

  • Piotr Jadwiszczak (a1) and Thomas Mörs (a2)


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