Sinanas is a genus of prehistoric duck that lived during the middle Miocene. The single known species is Sinanas diatomas. Fossils of the species have been recovered from the Shandong Province of China. Taxonomists are uncertain as to its affinities to modern waterfowl.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0