Xiaqiaojia Fm., YongRen, YongRen Co., YunNan Prov., China (Ordovician of China)

Where: YunNan, China (26.0° N, 102.0° E: paleocoordinates 23.3° N, 139.8° E)

• local area-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, dolomitic, cherty/siliceous limestone and lime mudstone

• dolomitic limestone with chert and muddy limestone

Primary reference: Stratigraphic Group of Yunnan, China. 1978. Regional stratigraphic data of Southwest China, Yunnan Province. Geological Publishing House, Beijing, China [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7741: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 01.06.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

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Pterobranchia
 Graptoloidea - Dichograptidae
Didymograptus sp.
Didymograptus sp. McCoy 1851 graptolite
Strophomenata
 Billingsellida - Billingsellidae
Eosotrematorthis sp.
 Strophomenida - Strophomenidae
Strophomena sp.
Strophomena sp. Rafinesque and De Blainville 1824
 Strophomenida - Rafinesquinidae
Rafinesquina sp.
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Orthida - Glyptorthidae
Lepidorthis sp.
Lepidorthis sp. Wang 1955
 Orthida - Orthidae
Orthis sp.
Orthis sp. Dalman 1828
Trilobita
 Phacopida - Calymenidae
Neseuretus sp.
Neseuretus sp. Hicks 1873 trilobite
 Corynexochida - Illaenidae
Illaenus sp.
Illaenus sp. Dalman 1827 trilobite
 Trinucleida - Trinucleidae
Hanchungolithus sp.
Hanchungolithus sp. Lu 1956 trilobite