The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- D. T. Ksepka and R. E. Fordyce. 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
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