Jadwiszczak, Piotr (2006): Eocene penguins of Seymour Island, Antarctica: Taxonomy. Polish Polar Research27(1): 3–62. PDF
Marples, Brian J. (1952): Early Tertiary penguins of New Zealand. New Zealand Geol. Surv., Paleont. Bull.20: 1-66.
Simpson, George Gaylord (1971): A review of the pre-Pleistocene penguins of New Zealand. Bulletin of the American Museum of Natural History 144: 319–378. PDF (頁面存檔備份,存於互聯網檔案館)