Xiushan Formation

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: Llandovery PreꞒ Ꞓ O S D C P T J K Pg N
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.

See also

• List of fossil sites