comment from Tian & Wang (2021)

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

Reef dwellers:
Echinoderms, ostracodes, ammonites,
trilobites, bryozoan, brachiopods,
gastropods, benthic foraminifera, calcareous algae, and rugose corals

Rock type and reef-related
depositional characteristic

Reef core: less sponge framestone with the encruster Archaeolithoporella, more sponge bafflestone and Tubiphytes-cyanobacteria bindstone
Reef flat: dolomitic bioclastic packstone with brachiopod fragments, foraminifera, algae, and reef breccia.
Reef crest: dolomitic bioclastic wackestone to packstone with algae and evaporite
Reef base: bioclastic packstone

Skeletal mound at the carbonate intraplatform