Chuanlinggou Formation

The Chuanlinggou Formation is a geologic formation in China. It preserves fossils dating back to the Statherian period of the Paleoproterozoic. It is the first formation to preserve definitive macroscopic eukaryotes, at 1.64 billion years old.^[2][3]

Chuanlinggou Formation
Stratigraphic range: 1641.7 ± 1.2 Ma[1]
Type	Formation
Underlies	Tuanshanzi Formation
Overlies	Changzhougou Formation
Location
Country	China

Paleobiota

After Miao et al, 2024,^[3] Liu et al, 2023^[2] and Zhongying 1986^[4]

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Paleobiota

Paleobiota
Genus	Species	Notes	Images
Qingshania	Q. magnifica	Enigmatic filamentous eukaryote
Tuanshanzia	T. sp	Enigmatic frond-like organism; possibly within Archaeplastida	A restoration of Tuanshanzia fasciaria
Changchengia	C. sp	Enigmatic frond-like organism, possibly within Archaeplastida	A restoration of Changchengia sp.
Glossophyton	G. ovalis G. sp	Enigmatic fossil, possibly an alga
Chuaria	C. circularis	Enigmatic fossil, possibly synonymous with Tawuia
Tawuia	T. sinensis T. robusta	Enigmatic fossil, possibly an alga	A restoration of Tawuia sinensis
Siphonophycus	S. sp	Filamentous fossil
Eomycetopsis	E. sp	Filamentous fossil
Archaeotrichion	A. sp	Filamentous fossil
Leiosphaeridia	L. sp	Acritarch
Kildinosphaera	K. sp	Acritarch