''Arthrodytes'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

penguin Penguins (order (biology), order List of Sphenisciformes by population, Sphenisciformes , family (biology), family Spheniscidae ) are a group of Water bird, aquatic flightless birds. They live almost exclusively in the Southern Hemisphere: on ...

s which contains a single

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

, whose remains have been recovered from the San Julian Formation (Late Eocene to Early Oligocene) of Patagonia. Other authors report a younger age for the fossils recovered from the

Early Miocene The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene Epoch made up of two stages: the Aquitanian and Burdigalian stages. The sub-epoch lasted from 23.03 ± 0.05 Ma to 15.97 ± 0.05 Ma (million years ago). It was prece ...

Gaiman and

Monte León Formation Monte may refer to: Places Argentina * Argentine Monte, an ecoregion * Monte Desert * Monte Partido, a ''partido'' in Buenos Aires Province Italy * Monte Bregagno * Monte Cassino * Montecorvino (disambiguation) * Montefalcione Portugal * M ...

s.''Arthrodytes''
at

Fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...

.org Together with the related genus ''

Paraptenodytes ''Paraptenodytes'' is an extinct genus of penguins which contains two or three species sized between a Magellanic penguin and an emperor penguin (''Aptenodytes forsteri''). They are known from fossil bones ranging from a partial skeleton and some ...

'', they form the subfamily Paraptenodytinae, which is not ancestral to modern penguins.

References

{{Taxonbar, from=Q30692749 Extinct penguins Bird genera Eocene birds Oligocene birds Paleogene birds of South America Miocene birds of South America Paleogene Argentina Neogene Argentina Fossils of Argentina Gaiman Formation Fossil taxa described in 1905 Taxa named by Florentino Ameghino