Template:Ksepka et al., 2012
- Ksepka, D.T.; Fordyce, R.E.; Ando, T.; Jones, C.M. 2012: New fossil penguins (Aves, Sphenisciformes) from the Oligocene of New Zealand reveal the skeletal plan of stem penguins Journal of Vertebrate Paleontology 32(2): 235–254. DOI: 10.1080/02724634.2012.652051
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