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The Yixian Formation (simplified Chinese: 义县组; traditional Chinese: 義縣組; pinyin: Yìxiàn zǔ) is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans about 5 million years during the early Cretaceous period (early Aptian stage). It is known for its fossils, listed below.
Contents
- Mammals
- Pterosaurs
- Ornithischians
- Saurischians
- Invertebrate fauna of the Yixian Formation
- Arachnids
- Dragonflies Odonata
- Conifers
- References
The Yixian Formation is divided into the following subunits, from most recent to oldest: (ages when available from Chang et al., 2009)
Mammals
The mammals listed below were compiled in a survey by Meng and colleagues in 2006, unless otherwise noted.
Pterosaurs
The pterosaurs listed below were compiled in a survey by Wang and Zhou in 2006, unless otherwise noted.
Ornithischians
The dinosaurs listed below were compiled in a survey by Xu and Norell in 2006, unless otherwise noted.
Saurischians
The dinosaurs listed below were compiled in a survey by Xu and Norell 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.