Units 1-4, TanJiaGou Fm., TanJiaGou, GuangYuan Co., Sichuan Prov., China (Ordovician of China)

Where: Sichuan, China (32.0° N, 106.0° E: paleocoordinates 14.2° N, 138.4° E)

• local area-level geographic resolution

When: Tanjiagou Formation, Early/Lower Llandeilo (466.0 - 460.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, sandy sandstone and lime mudstone

• quartz siltstone and shale with rare lime mudstone

Primary reference: Sichuan Stratigraphic Work Group. 1978. Regional stratigraphic table of the southwestern region of China, Sichuan part. Geological Publishing House, Beijing, China [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7678: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 30.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Pterygometopidae
Achatella sp. Delo 1935 trilobite
 Phacopida - Calymenidae
Neseuretus sp. Hicks 1873 trilobite
 Corynexochida - Illaenidae
Bumastus sp. Murchison 1839 trilobite
Pterobranchia
 Graptoloidea - Dichograptidae
Didymograptus sp. McCoy 1851 graptolite
 Graptoloidea - Lasiograptidae
Hallograptus sp. Lapworth 1876 lasiograptid
 Graptoloidea - Diplograptidae
 Graptoloidea - Dicranograptidae
Nemagraptus sp. graptolite
 Graptoloidea - Glossograptidae