''Sinanas'' is a genus of prehistoric

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 fo ...

that lived during the middle

Miocene The Miocene ( ) is the first 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 means "less recent" ...

. The single known species is ''Sinanas diatomas''. Fossils of the species have been recovered from the

Shandong Province Shandong ( , ; ; alternately romanized as Shantung) is a coastal province of the People's Republic of China and is part of the East China region. Shandong has played a major role in Chinese history since the beginning of Chinese civilizati ...

of China. Taxonomists are uncertain as to its affinities to modern waterfowl.

References

External links

Sinanas
at fossilworks Miocene birds Prehistoric birds of Asia Anseriformes Fossil taxa described in 1980 {{Paleo-bird-stub