Unit 22, Zhitai Fm., Yanheganxi and Yanhe, Guizhou Prov., China (Ordovician of China)

Where: Guizhou, China (29.0° N, 109.0° E: paleocoordinates 16.5° N, 138.4° E)

• local area-level geographic resolution

When: Zhitai Formation, Arenig (478.6 - 466.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, green, yellow, argillaceous limestone and shale

• Yellow-green medium-thick "web-like" mud limestone interbedded with shale and mud belt

Primary reference: R. Wang. 1981. Stratigraphic Summary of the Southwestern Region of China. Institute of Geology and Mine Deposit at Chengdu, Ministry of Geology (not published, copy of article deposited with A. I. Miller at the University of Cincinnati, received through S. Mao) 14-61 [A. Miller/P. Novack-Gottshall]more details

PaleoDB collection 4758: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 19.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Orthida - Plectorthidae
Desmorthis sp.
Desmorthis sp. Ulrich and Cooper 1936
Trilobita
 Phacopida - Calymenidae
Neseuretus sp.
Neseuretus sp. Hicks 1873 trilobite
 Phacopida - Encrinuridae
Paracybeloides sp.
Paracybeloides sp. Hupé 1955 trilobite
 Corynexochida - Leiostegiidae
"Eucalymene sp." = Pseudocalymene
"Eucalymene sp." = Pseudocalymene Pillet 1974 trilobite
 Asaphida - Asaphidae
Megalaspides sp.
Megalaspides sp. Brögger 1886 trilobite
Pterobranchia
 Graptoloidea - Dichograptidae
Didymograptus sp.
Didymograptus sp. McCoy 1851 graptolite
 Graptoloidea - Phyllograptidae
Tetragraptus sp.
Tetragraptus sp. Salter 1863 graptolite