Chengjiang - live count [Maotianshan Shale Mbr, Yuanshan Fm] (Cambrian of China)

Also known as Chengjiang biota

Where: Yunnan, China (24.8° N, 102.6° E: paleocoordinates 35.1° N, 161.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Maotianshan Shale Member (Yuanshan Formation), Atdabanian (520.0 - 516.0 Ma)

• LITHOSTRATIGRAPHY: From the Maotianshan Shale Mbr of the Yuanshan Fm. AGE: Qiongzhusian in Steiner (2005); correlates to Atdabanian (Steiner, 2007). STRATIGRAPHIC POSITION: From unknown position within local section.

• group of beds-level stratigraphic resolution

Environment/lithology: delta front; lithified, black, brown, green, carbonaceous mudstone and lithified, black sandstone

• ENVIRONMENT: Shallow marine delta front setting in a shallow bay.
• LITHOLOGY: Fine laminated mudstone intercalated with non-fossiliferous sandstone bed; black in color, weathering to tan; organic rich. LITHIFICATION: Lithified, on the basis of figures.

Size class: macrofossils

Preservation: adpression, soft parts

Reposited in the NIGPAS

Collection methods: bulk,

• COLLECTOR: Multiple collectors. REPOSITORY: Early Life Research Center (ELRC) and Nanjing Institute of Geology and Paleontology (NIGPAS), Chengjiang.

Primary reference: S. Q. Dornbos and J.-Y. Chen. 2008. Community palaeoecology of the early Cambrian Maotianshan Shale biota: Ecological dominance of priapulid worms. Palaeogeography, Palaeoclimatology, Palaeoecology 258:200-212 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 86933: authorized by Austin Hendy, entered by Austin Hendy on 24.02.2009, edited by Alex Lin

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for all groups; abundance only for organisms already considered to be in the life assemblage at the time of deposition. NOMENCLATURE: From a combination of authoritative and review publications, with modern nomenclature, but with only-resolution identifications.
Hexactinellida
 Reticulosa - Protospongiidae
Quadrolaminiella sp. Chen et al. 1990 glass sponge
 Radiodonta - Anomalocarididae
Trilobita
 Redlichiida - Redlichiidae
Eoredlichia sp. Chang 1950 trilobite
Artiopoda
 Nektaspidida - Naraoiidae
Naraoia sp. Walcott 1912
 Nektaspidida -
Xandarella sp. Hou et al. 1991
 Conciliterga -
Saperion sp. Hou et al. 1991
Crustacea
 Waptiida - Waptiidae
Waptia sp. Walcott 1912
 Canadaspidida - Canadaspididae
Canadaspis sp. Novozhilov in Orlov 1960
Ostracoda
  -
Acanthomeridion sp. Hou et al. 1989 ostracod
Deuteropoda
 Fuxianhuiida - Fuxianhuiidae
Fuxianhuia sp. Hou 1987
 Isoxyida - Isoxyidae
Isoxys sp. Walcott 1890
Megacheira
 Leanchoiliida - Leanchoiliidae
Leanchoilia sp. Walcott 1912
 Hallucishaniids -
Hallucigenia sp. Conway Morris 1977
Paucipodia
  -
Microdictyon
  -
Microdictyon sp. Bengston et al. 1981
Acosmia
  -
Acosmia sp. Chen and Zhou 1997
 Palaeoscolecidomorpha -
Maotianshania sp. Sun and Huo 1987
Lingulata
 Discinida - Disciniidae
Heliomedusa sp. Sun and Hou 1987
Chileata
  -
Vetulicolida
  - Vetulicolidae
Vetulicola sp. Hou 1987
 Bilateria - Eldoniidae
Eldonia sp. Walcott 1911