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.

Fossil content Cartilaginous fish Cartilaginous fish reported from the Xiushan Formation Genus Species Presence Material Notes ImagesChenolepisC. asketaGuizhou.Scales.Also known from the Ymogantau Formation.

Jawless fish Jawless fish reported from the Xiushan Formation Genus Species Presence Material Notes Images DayongaspisD. colubra Maoyanhe Town, Zhangjiajie, Hunan. A galeaspid.

Invertebrates Eurypterids Eurypterids reported from the Xiushan Formation Genus Species Presence Material Notes ImagesTerropterusT. xiushanensisXiushan.Several specimens.A mixopterid.

See also List of fossil sites

References

(1993); Wildlife of Gondwana. Reed.