The Yixian Formation () is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans about 1.6 million years during the early Cretaceous period (Barremian-Aptian stage). It is known for its fossils, listed below.
The Yixian Formation is divided into the following subunits: (ages from Zhong et al., 2021 unless otherwise noted)
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.
The pterosaurs listed below were compiled in a survey by Wang and Zhou in 2006, unless otherwise noted.
The mammals listed below were compiled in a survey by Meng and colleagues in 2006, unless otherwise noted.
The invertebrate species listed below follow a survey by Chen and colleagues published in 2005, unless otherwise noted.
The arachnid species listed below follow a catalogue compiled by Dunlop, Penney and Jekel in 2010, unless otherwise noted.
The dragonfly species listed below follow a review compiled by Zhang, Ren and Panf in 2008, unless otherwise noted.
The coniferous trees and shrubs listed below were compiled in a survey by Wang and colleagues in 2006, unless otherwise noted.