Paleobiota of the Yixian Formation
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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)
Sauropods
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Ornithischians
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.
Ankylosaurs
Ceratopsians
Ornithopods
Theropods
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.
Avialans
Compsognathids
Dromaeosaurs
Ornithomimosaurs
Oviraptorosaurs
Therizinosaurs
Troodontids
Tyrannosaurs and other theropods
Pterosaurs
The pterosaurs listed below were compiled in a survey by Wang and Zhou in 2006, unless otherwise noted.
Misc. reptiles
Choristoderans
Lizards
Turtles
Mammals
The mammals listed below were compiled in a survey by Meng and colleagues in 2006, unless otherwise noted.
Amphibians
Fish
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.
Beetles (Coleoptera)
Crustaceans
Dragonflies (Odonata)
The dragonfly species listed below follow a review compiled by Zhang, Ren and Panf in 2008, unless otherwise noted.
Flies (Diptera)
Wasps (Hymenoptera)
Other insects
Molluscs
Flora of the Yixian Formation
Conifers
The coniferous trees and shrubs listed below were compiled in a survey by Wang and colleagues in 2006, unless otherwise noted.

