''Dunstanetta johnstoneorum'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

and

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 ...

of extinct

duck Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese, which are members of the same family. Divided among several subfamilies, they are a form ...

from the

Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...

of New Zealand. It was described from

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

material (a distal left humerus) collected from a

Saint Bathans Fauna The St Bathans fauna is found in the lower Bannockburn Formation of the Manuherikia Group of Central Otago, in the South Island of New Zealand. It comprises a suite of fossilised prehistoric animals from the late Early Miocene (Altonian) period, ...

site on Home Hills Station, in the lower Bannockburn Formation of the

Manuherikia Group The Manuherikia Group is a fluvial- lacustrine sedimentary fill in the Central Otago area of New Zealand, at the site of the prehistoric Lake Manuherikia. The area consists of a valley and ridge topography, with a series of schist-greywacke mountai ...

, in the

Manuherikia River The Manuherikia River is located in Otago in the South Island of New Zealand. It rises in the far north of the Maniototo, with the West Branch draining the eastern side of the St Bathans Range, and the East Branch draining the western flanks of t ...

valley in the Central Otago region of the South Island. The genus name refers to the Dunstan Range, the mountains of which overlook the fossil site. The specific epithet honours Ann and Euan Johnstone of Home Hills Station.

References

Fossil taxa described in 2007 Birds described in 2007 Anatidae Miocene birds Extinct birds of New Zealand Extinct monotypic bird genera {{Paleo-bird-stub