Acrospirifer-Atrypa Community, Shizhou Member, Yukiang Fm., Loc. ADH 12 (Devonian of China)

Where: Guangxi, China (22.9° N, 108.9° E: paleocoordinates 3.7° N, 125.9° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Shizhou Member (Yukiang Formation), Early/Lower Emsian (409.1 - 402.5 Ma)

• Localities ADH 11-15 are in increasing stratigraphic sequence.

• member-level stratigraphic resolution

Environment/lithology: marine; mudstone

• "The commonly articulated nature of the brachiopods, combined with the muddy matrix, suggests a relatively quiet-water environment. The high diversity is consistent with BA 3, as is the position above BA 2 communities and below another BA 3 community. May represent a somewhat nearer-shore BA 3 unit than does the overlying Huananochonetes-Xenostrophia Comm. "
• "muddy matrix"

Collection methods: Specimen counts given in table 1.

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 25726: authorized by Michael Foote, entered by Michael Foote on 24.09.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Hysterolitidae
Rostrospirifer sp.
 Spiriferida - Acrospiriferidae
Acrospirifer sp., Elymospirifer sp.
Acrospirifer sp. Wedekind 1926
Elymospirifer sp. Wang 1974
 Spiriferida - Echinospiriferidae
"Glyptospirifer sp." = Howittia
"Glyptospirifer sp." = Howittia
 Orthida - Schizophoriidae
Schizophoria sp.
Schizophoria sp. King 1850
 Atrypida - Atrypidae
Atrypa sp., Desquamatia sp.
Atrypa sp. Dalman 1828
Desquamatia sp. Alekseeva 1960
genus name in quotes
 Rhynchonellida - Uncinulidae
Uncinulus sp.
Uncinulus sp. Bayle 1878
 Athyridida - Athyrididae
Athyris sp.
Strophomenata
 Orthotetida - Areostrophiidae
Areostrophia sp.
Areostrophia sp.
genus name in quotes
 Strophomenida - Strophodontidae
Megastrophia sp.
Megastrophia sp. Caster 1939
genus name in quotes
 Strophomenida - Douvillinidae
"Xenostrophia sp." = Nadiastrophia
"Xenostrophia sp." = Nadiastrophia Talent 1963
 Strophomenida - Dicoelostrophiidae
Dicoelostrophia sp.
 Strophomenida - Rafinesquinidae
Leptaenopyxis sp.
Leptaenopyxis sp. Havlícek 1963
 Strophomenida - Strophochonetidae
Parachonetes sp.
 Strophomenida - Chonetidae
cf. Chonetes sp.
cf. Chonetes sp. Fischer de Waldheim 1830
" 'Chonetes' n. gen., small, coarse