Mohershan, Kuruktag (Cambrian of China)

Where: Xinjiang, China (41.5° N, 90.0° E: paleocoordinates 10.1° S, 142.3° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Xidashan Formation, Nangaoian (516.0 - 513.0 Ma)

• Middle Tsanglanpuan Stage, which is middle Early Cambrian

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

• The Xidashan Formation is composed of blackish grey arenaceous limestones and argillaceous limestones, occasionally with siliceous bands of thin layers of nodular limestones and shales. The total thickness is about 60-88 meters.

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: W. Yü. 1986. Lower Cambrian univalved molluscs from Kuruktag, Xinjiang. Acta Palaeontologica Sinica 25(1):10-16 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49494: authorized by Pete Wagner, entered by Pete Wagner on 17.04.2005, edited by Uta Merkel

Creative Commons license: CC BY (attribution)

Taxonomic list

Archaeocyatha
 Ajacicyathida - Ajacicyathidae
Rotundocyathus sp.2, "Aldanocyathus cf. belvederi" = Nochoroicyathus2, "Aldanocyathus cf. solitus" = Nochoroicyathus2
Rotundocyathus sp.2 Vologdin 1960 archaeocyath sponge
"Aldanocyathus cf. belvederi" = Nochoroicyathus2 archaeocyath sponge
"Aldanocyathus cf. solitus" = Nochoroicyathus2 archaeocyath sponge
 Capsulocyathida - Coscinocyathidae
Coscinocyathus sp.2 Bornemann 1884 archaeocyath sponge
Coscinocyathus codonoformis n. sp.2 Zhang 1983 archaeocyath sponge
Coscinocyathus tarimensis n. sp.2 Zhang 1983 archaeocyath sponge
Coscinocyathus kuruktagensis n. sp.2 Zhang 1983 archaeocyath sponge
Coscinocyathus xinjiangensis n. sp.2 Zhang 1983 archaeocyath sponge
Coscinocyathus hoxudensis n. sp.2 Zhang 1983 archaeocyath sponge
Coscinocyathus mohershanensis n. sp.2 Zhang 1983 archaeocyath sponge
 Archaeocyathida - Loculicyathidae
"Robustocyathus cf. kruzini" = Cambrocyathellus2, "Robustocyathus cf. changainensis" = Cambrocyathellus2, "Robustocyathus sp." = Cambrocyathellus2
"Robustocyathus cf. kruzini" = Cambrocyathellus2 archaeocyath sponge
"Robustocyathus cf. changainensis" = Cambrocyathellus2 archaeocyath sponge
"Robustocyathus sp." = Cambrocyathellus2 archaeocyath sponge
Helcionelloida
 Helcionellida - Helcionellidae
Helcionella xinjiangensis n. sp., Eocyrtolites radiatus n. gen. n. sp., "? Cyrtodiscus kuruktagensis n. sp." = Anabarella kuruktagensis
Helcionella xinjiangensis n. sp. Yü 1986
Eocyrtolites radiatus n. gen. n. sp. Yü 1986
"? Cyrtodiscus kuruktagensis n. sp." = Anabarella kuruktagensis Yü 1986
Rhynchonellata
 Protorthida - Protorthidae
Israelaria sp.2 Cooper 1976
Obolellata
 Obolellida - Obolellidae
Obolella sp.2 Billings 1861
Chileata
 Chileida - Matutellidae
Kotujella sp.2 Andreeva 1962
Stenothecoida
 Cambridioida - Cambridiidae
Stenothecoides sp. Resser 1938
Bagenovia sp. Horný 1957
Bagenovia cf. sajanica1 Horný 1957
Trilobita
 Redlichiida - Redlichiidae
Metaredlichia xibeiensis n. sp.3 Zhu and Lin 1983 trilobite
Parazhenbaspis sp.3 Zhu and Lin 1983 trilobite
Parazhenbaspis mohershanensis n. gen. n. sp.3 Zhu and Lin 1983 trilobite
Parazhenbaspis kuruktagensis n. sp.3 Zhu and Lin 1983 trilobite
Metaredlichioides rectangularis n. sp.3 Zhu and Lin 1983 trilobite
 Corynexochida - Chengkouiidae
Chengkouia xinjiangensis n. sp.3 Zhu and Lin 1983 trilobite
Chengkouia constricta n. sp.3 Zhu and Lin 1983 trilobite
Chengkouia tianshanensis n. sp.3 Zhu and Lin 1983 trilobite