Maotianshan, Bed 4 [Yuanshan Fm] (Cambrian of China)

Where: Yunnan, China (24.0° N, 102.0° E: paleocoordinates 36.1° N, 161.0° E)

• outcrop-level geographic resolution

When: Eoredlichia- Wutingaspis trilobite zone, Yuanshan Formation, Atdabanian (521.0 - 516.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Yuanshan Mbr [now formation rank] of the Chiungchussu Formation. AGE: Atdabanian on the basis of trilobite biostratigraphy; Eoredlichia- Wutingaspis trilobite zone. STRATIGRAPHIC POSITION: From bed 4.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, brown, gray, yellow, silty shale

• SPECIFIC LITHOLOGY: Greyish-yellow shale and silty shale intercalated with greyish-brown siltstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the NIGPAS

• COLLECTOR: Not stated in text. REPOSITORY: NIGP (Nanjing Institute of Geology and Palaeontology).

Primary reference: Y. G. Jin, X. G. Hou, and H. Y. Wang. 1993. Lower Cambrian pediculate lingulids from Yunnan, China. Journal of Paleontology 67(5):788-798 [A. Hendy/A. Hendy/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90494: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not exhaustive for marine invertebrate taxa, but containing characteristic forms. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Show authors, comments, and common names
 Palaeoscolecidomorpha -
Maotianshania cylindrica
Maotianshania cylindrica Sun and Huo 1987
Microdictyon
  -
Microdictyon sinicum
Microdictyon sinicum Chen et al. 1989
Bilateria
 Luolishaniida -
Facivermis yunnanicus
Facivermis yunnanicus Hou and Chen 1989
 Bradoriida -
Kunmingella maotianshanensis, Kunyangella cheni, Tsunyiella zhijinensis
Rhombicalvaria acantha
  -
Rhombicalvaria acantha
Jianfengia
  -
Jianfengia multisegmentalis
Artiopoda
 Conciliterga -
Kuamaia lata
Kuamaia lata Hou 1987
 Nektaspidida - Naraoiidae
"Naraoia longicaudata" = Misszhouia longicaudata, Naraoia spinosa
"Naraoia longicaudata" = Misszhouia longicaudata Zhang and Hou 1985
Naraoia spinosa Zhang and Hou 1985
Trilobita
 Redlichiida - Yunnanocephalidae
Yunnanocephalus yunnanensis
Yunnanocephalus yunnanensis Mansuy 1912 trilobite
 Redlichiida - Redlichiidae
"Eoredlichia intermedia" = Eoredlichia intermediata
"Eoredlichia intermedia" = Eoredlichia intermediata Lu 1940 trilobite
Deuteropoda
 Hymenostraca -
? Branchiocaris yunnanensis
 Isoxyida - Isoxyidae
Isoxys paradoxus, Isoxys auritus
Isoxys auritus Jiang 1982
 Fuxianhuiida - Fuxianhuiidae
Fuxianhuia protensa
Brachiopoda
  - Mickwitziidae
Heliomedusa orienta
Heliomedusa orienta Sun and Hou 1987
Paterinata
 Paterinida - Paterinidae
Micromitra sp.
Micromitra sp. Meek 1873
Lingulata
 Lingulida - Lingulellotretidae
"Lingulepis malongensis" = Lingulellotreta malongensis
"Lingulepis malongensis" = Lingulellotreta malongensis Rong 1974
 Lingulida - Obolidae
"Lingulella chengjiangensis n. sp." = Eoglossa chengjiangensis
"Lingulella chengjiangensis n. sp." = Eoglossa chengjiangensis Jin et al. 1993
Vetulicolida
  - Vetulicolidae
Vetulicola cuneatus
 Bilateria - Eldoniidae
Stellostomites eumorphus, Rotadiscus grandis
Stellostomites eumorphus Sun and Hou 1987
Rotadiscus grandis Sun and Hou 1987
Demospongiae
 Protomonaxonida - Leptomitidae
Leptomitella confusa, Leptomitella conica, Paraleptomitella dictyodroma, Paraleptomitella globula
Leptomitella confusa Chen et al. 1989 demosponge
Leptomitella conica Chen et al. 1989 demosponge
Paraleptomitella dictyodroma Chen et al. 1989 demosponge
Paraleptomitella globula Chen et al. 1989 demosponge
Yunnanomedusa eleganta
  -
Yunnanomedusa eleganta
Yunnanomedusa eleganta Sun and Hou 1987