Lower Beds TangShan (Ordovician of China)

Where: JiangSu, China (32.0° N, 119.0° E)

• Paleocoordinates: 37.7° N, 80.9° E (Wright 2013)

• local area-level geographic resolution

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

• Lower half of formation.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, gray, yellow, cherty/siliceous lime mudstone and limestone

• grayish yellow to grayish brown calcareous muddy limestone with nodular limestone

Size class: macrofossils

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 192795: authorized by Pete Wagner, entered by Pete Wagner on 19.04.2018

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Proetida - Rorringtoniidae
Madygenia communis
Madygenia communis Ju 1981 trilobite
1
 Phacopida - Encrinuridae
"Lyrapyge ? gaoluoensis" = Sinocybele gaoluoensus
"Lyrapyge ? gaoluoensis" = Sinocybele gaoluoensus Zhou 1977 trilobite
2
 Phacopida - Pliomeridae
Ovalocephalus decorosus, Encrinurella tetrasulcata
Encrinurella tetrasulcata Ju 1981 trilobite
2
 Phacopida - Calymenidae
Calymenesun granulosa
 Asaphida - Cyclopygidae
Cyclopyge rotundata
Cyclopyge rotundata trilobite
12
 Asaphida - Remopleurididae
Amphitryon cheni
Amphitryon cheni trilobite
2
 Corynexochida - Styginidae
Failleana ? luerkouensis
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis aff. tarda, Corrugatagnostus jiangshanensis
Arthrorhachis aff. tarda Barrande 1846
1