Named By: Min Zhu, Yu-Hai Liu, Lian-Tao Jia & Zhi-Kun Gai - 2012.
Classification: Chordata, Galeaspida, Eugaleaspidiformes.
Species: D. longiforus (type).
Known locations: China, Yunnan Province - Kuanti Formation.
Time period: Late Silurian.
Fossil representation: Head shield.
Dunyu is a genus of jawless fish that lived in the waters around what is now China during the Silurian.
- A new genus of eugaleaspidiforms (Agnatha: Galeaspida) from the Ludlow, Silurian of Qujing, Yunnan, Southwestern China. - Vertebrata PalAsiatica 50 (1): 1–7. - Min Zhu, Yu-Hai Liu, Lian-Tao Jia & Zhi-Kun Gai - 2012.