Selong Xishan, coral bed (Permian of China)

Where: Xizang, China (28.7° N, 85.8° E: paleocoordinates 52.5° S, 63.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Selong Group, Changhsingian (254.2 - 252.2 Ma)

• The top 1.08 m of the Selong Group is named the Coral Bed, equivalent to beds 13-15 in Shen et al. (2000).

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, shelly/skeletal grainstone

• formed in a high-energy shoal environment
• Medium-bedded grainstone with up to 80% skeletal debris, of which over 65% are subrounded, separated segments of crinoid stems and less than 15% abraded fragments of brachiopods, bivalves and bryozoans. They are well sorted and closely compacted. Abundant terrigenous clastics such as quartz silts and feldspar appear in the topmost 10 cm.

Size class: macrofossils

Collected by S.Z. Shen in 1994

Primary reference: S. Shen and Y. Jin. 1999. Brachiopods from the Permian-Triassic boundary beds at the Selong Xishan section, Xizang (Tibet), China. Journal of Asian Earth Sciences 17:547-559 [T. Olszewski/L. Fall/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51398: authorized by Tom Olszewski, entered by Leigh Fall on 03.06.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Productida - Productellidae
"Krotovia arcuata" = Lazarevonia arcuata
"Krotovia arcuata" = Lazarevonia arcuata Waterhouse 1978
Rhynchonellata
 Athyridida - Athyrididae
"Cleiothyridina deroyssii" = Cleiothyridina deroissyi
"Cleiothyridina deroyssii" = Cleiothyridina deroissyi Leveille 1835
 Spiriferinida - Spiriferellinidae
Spiriferellina sp.
 Rhynchonellida - Psilocamaridae
"Stenoscisma timorense" = Bicamella timorensis
"Stenoscisma timorense" = Bicamella timorensis Hayasaka and Gan 1940
 Spiriferida - Trigonotretidae
Neospirifer sp.
Neospirifer sp. Fredericks 1919
 Spiriferida - Spiriferellidae
Spiriferella rajah, Spiriferella nepalensis
Spiriferella rajah Salter 1865
Spiriferella nepalensis Legrand-Blain 1976