Lower Beds, Lunshan Trench, 20 km north-east of Nanjing (Ordovician of China)

Where: JiangSu, China (32.1° N, 119.3° E: paleocoordinates 0.3° N, 127.6° E)

• local area-level geographic resolution

When: Amplexograptus disjunctus yangtzeensis graptolite zone, Tangtou Formation, Katian (453.0 - 445.2 Ma)

• Lower half of the formation

• member-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, concretionary, yellow limestone and shale

• yellow limestone and shale with muddy limestone at the base; light red and yellow nodular limestone

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression

Primary reference: R. P. Tripp, Z. Zhou, and Z. Pan. 1989. Trilobites from the Upper Ordovician Tangtou Formation, Jiangsu Province, China. Transactions of the Royal Society of Edinburgh: Earth Sciences 89:25-68 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 192793: authorized by Pete Wagner, entered by Pete Wagner on 19.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Artiopoda
 Agnostida - Metagnostidae
Trilobita
 Harpetida - Harpetidae
"Sinoharpes yunnanensis" = Dubhglasina yunnanensis
"Sinoharpes yunnanensis" = Dubhglasina yunnanensis Sheng 1974 trilobite
1
 Phacopida - Pliomeridae
Encrinurella tetrasulcata Ju 1981 trilobite
2
Ovalocephalus ovatus trilobite
1
 Proetida - Rorringtoniidae
Madygenia communis Ju 1981 trilobite
3
 Corynexochida - Styginidae
 Trinucleida - Dionididae
Dionide regalis trilobite
2
 Trinucleida - Raphiophoridae
 Asaphida - Remopleurididae
Remopleuridinae indet. Hawle and Corda 1847 trilobite
5
Amphitryon cheni trilobite
6
 Asaphida - Cyclopygidae
Cyclopyge rotundata trilobite
58
 Asaphida - Nileidae
"Nileus transversus" = Paraperaspis convergens
"Nileus transversus" = Paraperaspis convergens Lu 1975 trilobite
7
Calymenesun
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