Leijiatun Formation, NE Guizhou, W Hunan, and SW Hubei Provinces: Telychian, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Cyathocrinida - Petalocrinidae
Petalocrinus sp. Weller and Davidson 1896
Spirocrinus sp. Mu and Wu 1974
Pterobranchia - Dendroidea - Acanthograptidae
Dictyonema cf. desmoides
Pterobranchia - Graptoloidea - Monograptidae
Pristiograptus xiushanensis
Monograptus sp.
Pterobranchia - Graptoloidea - Retiolitidae
Petalolithus sp.
Strophomenata - Strophomenida - Aegiromenidae
Aegiromena sp. Havlícek 1961
Strophomenata - Strophomenida - Furcitellidae
Katastrophomena sp. Cocks 1968
Rhynchonellata - Atrypida
Zygospiraella sp. Nikiforova 1961
Rhynchonellata - Atrypida - Atrypinidae
Nalivkinia sp.
Atrypina (Atrypina) sp. Hall and Clarke 1893
Atrypina (Atrypinopsis) sp. ()
Spirigerina sp. d'Orbigny 1849
Rhynchonellata - Atrypida - Lissatrypidae
Meifodia sp.
Lissatrypa sp. Twenhofel 1914
Rhynchonellata - Atrypida - Atrypidae
Atrypa sp. Dalman 1828
Rhynchonellata - Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
Cephalopoda
Nautiloidea indet. Agassiz 1847
Trilobita - Corynexochida - Styginidae
Meitanillaenus sp. Zhang 1974
Trilobita - Corynexochida - Illaenidae
Ptilillaenus sp. Lu 1962
Trilobita - Proetida - Proetidae
Latiproetus obesus
Trilobita - Proetida - Aulacopleuridae
Songkania sp. Chang 1974
Trilobita - Phacopida - Encrinuridae
Encrinuroides sp. Reed 1931
Trilobita - Phacopida - Cheiruridae
Shiqiania punctata
synonym of Hyrokybe
Trilobita - Harpetida - Harpetidae
Aristoharpes sp. Whittington 1950
synonym of Scotoharpes
Trilobita - Odontopleurida - Odontopleuridae
Gaotania sp. Chang 1974
Anthozoa - Cystiphyllida - Cystiphyllidae
Microplasma sp. Dybowski 1873
Hedstroemophyllum multispilatum
original and current combination Cystiphyllum (Hedstroemophyllum)
corrected from "Hedstromophyllum"
Anthozoa - Cystiphyllida - Tryplasmatidae
Tryplasma sp. Lonsdale 1845
Anthozoa - Cystiphyllida - Goniophyllidae
Rhizophyllum sp. Lindström 1866
Anthozoa - Stauriida - Amplexidae
Amplexoides sp. Wang 1947
Pilophyllia sp. Ge and Yü 1974
corrected from "Pilopohyllia"
Anthozoa - Stauriida - Stauriidae
Ceriaster colunelatus
Stauria shiqianensis
Anthozoa - Stauriida - Streptelasmatidae
Brachyelasma sp. Lang et al. 1940
Anthozoa - Favositida - Favositidae
Mesofavosites sp. Sokolov 1951
Palaeofavosites sp. (Twenhofel 1914)
original and current combination Paleofavosites
Favosites sp. Lamarck 1816
Anthozoa - Favositida - Parastriatoporidae
Parastriatopora sp. Sokolov 1949
Anthozoa - Heliolitida - Plasmoporidae
Plasmopora sp. Milne-Edwards and Haime 1849
Anthozoa - Heliolitida - Halysitidae
Schedohalysites sp. Hamada 1957
Anthozoa - Sarcinulida - Billingsariidae
Qianbeilites multitabulatus
Codonophyllidae
Codonophyllum leijiatunensis
see common names

Geography
Country:China
Coordinates: 28.0° North, 108.0° East (view map)
Paleocoordinates:7.2° North, 126.7° East
Basis of coordinate:estimated from map
Geographic resolution:basin
Time
Period:Silurian Epoch:Llandovery
Stage:Telychian 10 m.y. bin:Silurian 1
*Epoch:Late/Upper Llandovery
Key time interval:Telychian Graptolite zone: Spirograptus turriculatus
Age range of interval:438.50000 - 433.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Leijiatun
Stratigraphic resolution:formation
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: calcareous "shale"
Secondary lithology: "limestone"
Lithology description: "The L. Fm. belongs to the shelly facies, although sometimes associated with graptolites. It is composed predominantly of yellow-green shale, with calcareous lenses or nodular marl in the lower and middle parts. The uppermost part is limestone and marl, which provide a clearly defined boundary with the overlying Majiaochong Fm. (entirely shale or mudstone)...The formation is...87 m thick."
Environment:marine indet.
Geology comments: Correlation chart indicates BA 3 position.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:biostratigraphic analysis
Collection method comments: Nautiloids said to be present, but are not listed.
Metadata
Also known as:Codonophyllum-Qianbeilites-Spirocrinus Assemblage
Database number:27773
Authorizer:M. Foote Enterer:M. Foote
Modifier:P. Wagner Research group:marine invertebrate
Created:2003-01-08 13:01:11 Last modified:2018-04-12 00:25:43
Access level:the public Released:2003-01-08 13:01:11
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]