Unnamed Argillaceous Limestone at Hunshuitang near Baoshan, Yunnan Province: Ludlow - Pridoli, China

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Dissidocerida - Geisonoceratidae
Geisonoceras sp. Hyatt 1884
Cephalopoda - Orthocerida - Dawsonoceratidae
Dawsonoceras cf. omega
Cephalopoda - Orthocerida - Orthoceratidae
"Orthoceras" trecentesium
Michelinoceras (Kopaninoceras) dorsatum
original and current combination Kopaninoceras
Michelinoceras (Kopaninoceras) jucundum (Barrande 1870)
Crinoidea - Monobathrida - Scyphocrinitidae
Camarocrinus asiaticus
synonym of Scyphocrinites
Conodonta - Ozarkodinida - Spathognathodontodae
Spathognathodus inclinatus Branson and Mehl 1933
synonym of Hindeodella excavata
Neoprioniodus excavatus (Branson and Mehl 1933)
recombined as Hindeodella excavata
corrected from "Neoprioniodes"
Conodonta - Ozarkodinida
Hindeodella equidentata Rhodes 1953
Ozarkodina media Walliser 1957
Conodonta
Spathognathodus eosteinhornensis
Trichonodella excavatus
see common names

Geography
Country:China State/province:Yunnan
Coordinates: 25.0° North, 99.0° East (view map)
Paleocoordinates:1.8° South, 138.5° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Silurian
10 m.y. bin:Silurian 2
*Epoch:Ludlow - Pridoli
Key time interval:Ludlow - Pridoli
Age range of interval:427.40000 - 419.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
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. "Ni Yu-nan and others (in press) described this unit. When they measured the type section of the Jenhochiao Formation at Hunshuitang...they reported [it]...[The] fauna indicates a Ludlow to Pridoli age." The unit is faulted off at the base. A minimum thickness is about 50 m."
Lithology and environment
Primary lithology:gray,green,red or brown marl
Secondary lithology: "limestone"
Lithology description: "purple, gray-green marl and limestone with a few black shale interbeds"
Environment:marine indet.
Geology comments: Correlation chart shows BA3 position based on shelly fauna.
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:27854
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2003-01-14 13:49:01 Last modified:2006-09-13 14:01:03
Access level:the public Released:2003-01-14 13:49:01
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]