Paleobiota of the Yixian Formation



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)


 * Upper Yixian (124.1 Ma) ("Jingangshan Bed") ("Dawangzhangzi Bed")
 * Upper Lava Unit
 * Jianshangou Unit (125.46 Ma)
 * Lower Lava Unit
 * Lujiatun Unit (125.76–125.68 Ma)

Ornithischians
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.

Theropods
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.

Pterosaurs
The pterosaurs listed below were compiled in a survey by Wang and Zhou in 2006, unless otherwise noted.

Mammals
The mammals listed below were compiled in a survey by Meng and colleagues in 2006, unless otherwise noted.

Invertebrate fauna of the Yixian Formation
The invertebrate species listed below follow a survey by Chen and colleagues published in 2005, unless otherwise noted.

Arachnids
The arachnid species listed below follow a catalogue compiled by Dunlop, Penney and Jekel in 2010, unless otherwise noted.

Dragonflies (Odonata)
The dragonfly species listed below follow a review compiled by Zhang, Ren and Panf in 2008, unless otherwise noted.

Conifers
The coniferous trees and shrubs listed below were compiled in a survey by Wang and colleagues in 2006, unless otherwise noted.