A phylogeny of extant penguins (Aves: Sphenisciformes) combining morphology and mitochondrial sequences

@article{Bertelli2005APO,
  title={A phylogeny of extant penguins (Aves: Sphenisciformes) combining morphology and mitochondrial sequences},
  author={Sara Bertelli and Norberto Pedro Giannini},
  journal={Cladistics},
  year={2005},
  volume={21}
}
The phylogenetic relationships among the penguins have received little attention, despite their well‐known anatomy and the conspicuous nature of the group. Previous attempts have included datasets limited to few, mostly osteological characters, and one study was based on integumentary and breeding characters. We developed a morphological matrix comprising 159 morphological characters of osteology (70 characters), myology (15), digestive tract (1), integument (66), and breeding (7 characters… 

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