Classification of Acosta Hospitaleche et al. 2008

Or. Sphenisciformes Sharpe 1891 [penguin]
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Fm. Spheniscidae Bonaparte 1831
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G. †Palaeospheniscus Moreno and Mercerat 1891
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Palaeospheniscus patagonicus Moreno and Mercerat 1891
G. †Paraptenodytes Ameghino 1891
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Paraptenodytes antarcticus Moreno and Mercerat 1891