Sponges-tabulozoans-bryozoans-Tubiphytes-algae
Diverse association with important microbial elements.
Diversity and cement less than in Jiantianba, but micrite more important.

Abstract of ref. 205:
The uppermost Permian Chuenmuping reef formed on the western side of a carbonate platform situated in the eastern Sichuan Basin, southern China. Contrasts exist between this western patch reef and the better known Jiantianba barrier reef complex on the eastern platform margin in western Hubei Province, 250 km to the east. Microbial micritic carbonates form significant components of the Chuenmuping reef limestones. Three types of fabric can be identified: irregular, clotted and scalloped-laminated. An additional, cuneiform fabric has been found only in fore-reef facies at Jiantianba. Irregular fabric is comparable with the surface of presently forming travertines at Rapolano Terme, central Italy, which are produced by calcification of cyanobacteria. Clotted fabric shows indistinct peloids which tend to lack rims, and are amalgated into irregular masses, some of which exhibit bush-like arrangements where traces of filaments can be seen. Traces of filaments are observed in both dark and light layers in the scalloped-laminated fabric, again suggesting a microbial origin. Cuneiform fabric consists of peloids and filaments, and closely resembles deposits in Quaternary travertines which may have been caused by bacterial action. Chuenmuping reef shows a shallowing sequence in normal marine conditions. The micritic fabrics interpreted here as microbial occur more commonly in the upper part of the reef. This indicates that microbial micrities, with a cementing role, formed coevally with reef growth within the upper part of the photic zone.

Comments für Chunmuping from Tian & Wang, 2021:

Reef builders:
Frame-building and baffling organisms: hypercalcified sphinctozoan and inozoan sponges, sclerosponges, hydrozoans, and bryozoans.
Binding organisms: Tubiphytes, bryozoan, and cyanobacteria.

Rock type and reef-related depositional characteristic:
Reef core: less sponge framestone and more bafflestone and sponge-Tubiphytes-cyanobacteria bindstone.
Reef crest (reef flat): dolomitic bioclastic packstone with crinoid fragments, algae, and reef breccia
Reef base: crinoidal packstone.

Reef type: Skeletal mound at the carbonate intraplatform.

Coordinates stated in text.

Comments für Jianshuigou from Tian & Wang, 2021:

Reef builders:
Frame-building and baffling organisms: hypercalcified sphinctozoan and inozoan sponges,sclerosponge, bryozoans, and hydrozoans
Binding organisms: Archaeolithoporella, Tubiphytes, Palaeoaplysina (problematic “hydrozoan”), cyanobacteria, bryozoan, and hydrozoan.

Reef dwellers: Echinoderms, ammonites, bivalves,
brachiopods, gastropods, benthic foraminifera, and calcareous algae.

Rock type and reef-related depositional characteristic:
Reef core: less sponge framestone and more sponge bafflestone and sponge-Tubiphytes-Archaeolithoporella-cyanobacteria bindstone.
Reef flat: dolomitic bioclastic packstone to grainstone with crinoid fragments, foraminifera, algae, and reef breccia.
Reef crest: micritic dolostone with gastropods and evaporite.
Reef base: dolomitic crinoidal packstone

Reef type: Skeletal mound at the carbonate intraplatform.

Coordinates stated in text.