Unit 19, 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: deep subtidal shelf; lithified, green, yellow, calcareous shale

• Yellowish-green shale with thin layers of mica sandy shales and calcareous belts

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 4761: 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
Trilobita
 Asaphida - Asaphidae
Asaphidae indet., Liomegalaspides sp.
Asaphidae indet. Burmeister 1843 trilobite
Liomegalaspides sp. Lu and Chang 1974 trilobite
 Phacopida - Pliomeridae
Encrinurella sp.
Encrinurella sp. Reed 1915 trilobite
Rhynchonellata
 Pentamerida - Camerellidae
Idiostrophia sp.
Idiostrophia sp. Ulrich and Cooper 1936
 Pentamerida - Tetralobulidae
Doloresella sp., Syntrophopsis sp., Punctolira sp.
 Orthida - Draboviidae
Drabovinella sp.
 Orthida - Paurorthidae
Paurorthis sp.
Paurorthis sp. Schuchert and Cooper 1931
 Orthida - Hesperonomiidae
Hesperonomia sp.
Hesperonomia sp. Ulrich and Cooper 1936
 Orthida - Orthidae
Sinorthis sp.
 Orthida - Archaeorthidae
Nothorthis sp.
Nothorthis sp. Ulrich and Cooper 1938
 Orthida - Plectorthidae
Mimella sp., Desmorthis sp.
Mimella sp. Cooper 1930
Desmorthis sp. Ulrich and Cooper 1936
 Orthida - Euorthisinidae
Euorthisina sp.
Strophomenata
 Strophomenida - Taffiidae
Leptella sp.
Leptella sp. Hall and Clarke 1892
Pterobranchia
 Graptoloidea - Phyllograptidae
Tetragraptus sp., Phyllograptus sp.
Tetragraptus sp. Salter 1863 graptolite
Phyllograptus sp. Hall 1858 graptolite
 Graptoloidea - Dichograptidae
Didymograptus sp., Azygograptus sp.
Didymograptus sp. McCoy 1851 graptolite
Azygograptus sp. Nicholson and Lapworth 1875 graptolite