Protathyris Community, lower Miaokao Fm., eastern Yunnan (Silurian of China)

Where: Yunnan, China (26.0° N, 103.0° E: paleocoordinates 9.2° N, 130.7° E)

• coordinate estimated from map

• basin-level geographic resolution

When: Miaokao Formation, Ludlow (427.4 - 423.0 Ma)

• "Wang and others (1980) reported crispus Zone, Late Ludlovian age conodonts from the lower part of the Miaokao Formation."

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone

• "The articulated shells, the dominance of [Protathyris], and the fine-grained limestone matrix are all consistent with lower than normal oxygen and low current activity."
• "fine-grained limestone matrix"

Collection methods: Table 13 (which includes specimen counts for selected taxa), plus other taxa mentioned in text.

Primary reference: Y. Wang, A. J. Boucot, J.Y. Rong and X.C. Yang. 1987. Community paleoecology as a geologic tool: the Chinese Ashgillian-Eifelian (latest Ordovician through early Middle Devonian) as an example. Geological Society of America Special Paper 211:1-100 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 25818: authorized by Michael Foote, entered by Michael Foote on 25.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Areostrophiidae
Aesopomum sp. Havlicek 1965
Rhynchonellata
 Orthida - Schizophoriidae
"Eoschizophoria sp." = Schizophoria (Eoschizophoria)
"Eoschizophoria sp." = Schizophoria (Eoschizophoria) Rong and Yang 1980
 Rhynchonellida - Hebetoechiidae
 Athyridida - Athyrididae
 Athyridida - Retziellidae
"Protathyrisina uniplicata" = Retziella, "Protathyrisina plicata" = Retziella, "Protathyrisina sp." = Retziella
"Protathyrisina uniplicata" = Retziella
"Protathyrisina plicata" = Retziella
"Protathyrisina sp." = Retziella Nikiforova 1937
 Spiriferida - Delthyrididae
Lingulata
 Lingulida - Lingulidae