Xiushan Formation
Geologic formation in China
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The Xiushan Formation is a palaeontological formation located in China. It dates to the Lower Silurian period. Studies of conodonts found in the formation suggests the lower member and main part of the upper member correspond to the Pterospathodus eopennatus Superbiozone, whereas the top of the upper member likely correlates with the Pterospathodus celloni Superbiozone.[1]
| Xiushan Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Location | |
| Region | Southern China |
| Country | China |
| Type section | |
| Named for | Xiushan County |
Fossil content
Cartilaginous fish
| Cartilaginous fish reported from the Xiushan Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Chenolepis | C. asketa | Guizhou.[2] | Scales.[2] | Also known from the Ymogantau Formation. | |
Jawless fish
| Jawless fish reported from the Xiushan Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Dayongaspis | D. colubra | Maoyanhe Town, Zhangjiajie, Hunan.[3] | A galeaspid. | ||
Invertebrates
Eurypterids
| Eurypterids reported from the Xiushan Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Terropterus | T. xiushanensis | Xiushan.[4] | Several specimens.[4] | A mixopterid. |  |
