Mayilashan Group, Upper Part, Near Karamay City, NW Xinjiang Province: Ludlow, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Favositida - Favositidae
Favosites sp. Lamarck 1816
Palaeofavosites moribundus
original and current combination Paleofavosites
Mesofavosites obliquus Sokolov 1951
Anthozoa - Favositida - Pachyporidae
Cladopora sp. Hall 1851
Anthozoa - Heliolitida - Heliolitidae
Heliolites sp. Dana 1846
Anthozoa - Cystiphyllida - Cystiphyllidae
Microplasma sp. Dybowski 1873
Anthozoa - Stauriida - Kyphophyllidae
Kyphophyllum sp. Wedekind 1927
Anthozoa - Stauriida - Laccophyllidae
Syringaxon sp. Lindström 1882
Pterobranchia - Graptoloidea - Monograptidae
Pristiograptus cf. colonnus
Saetograptus cf. chimaera
Stenolaemata - Cryptostomata - Fenestellidae
Fenestella sp. Lonsdale 1839
Rhynchonellata - Atrypida - Atrypidae
? Atrypa sp. Dalman 1828
Strophomenata - Strophomenida - Chonetidae
? Chonetes sp. Fischer de Waldheim 1830
see common names

Geography
Country:China State/province:Xinjiang
Coordinates: 45.5° North, 84.9° East (view map)
Paleocoordinates:1.3° South, 71.0° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Silurian Epoch:Ludlow
10 m.y. bin:Silurian 2
Key time interval:Ludlow
Age range of interval:427.40000 - 423.00000 m.y. ago
Stratigraphy
Geological group:Mayilashan
Stratigraphic resolution:group
Stratigraphy comments: Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli.
Lithology and environment
Primary lithology:volcaniclastic,gray,green,red or brown "siliciclastic"
Secondary lithology:tuffaceous siltstone
Lithology description: "The [group] consists mainly of gray-green and purple volcanoclastic rocks, intermediate and basic lavas, clastic rocks (tuffaceous siltstone), siliceous slate, and argillaceous siltstone. There is also intercalated sandstone, conglomerate, andesite porphyry, basalt, and basanite. Fossils, usually corals, brachiopods, and graptolites, occur in both the upper and lower parts...A thickness of 8438 m is mentioned."
Environment:marine indet.
Geology comments: Correlation chart indicates BA3 based shelly fauna, at least for upper part of the Group.
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:27795
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2003-01-09 11:22:53 Last modified:2006-09-13 14:01:03
Access level:the public Released:2003-01-09 11:22:53
Creative Commons license:CC BY
Reference information

Primary reference:
7624. E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]