Description taken from Jiantianba reef.

Comment from Xuesong Tian, Yue Wang, 2021:
Reef builders: 
Frame-building and baffling organisms: hypercalcified sphinctozoan and inozoan sponges, sclerosponges, stromatoporoid sponge, bryozoans, and hydrozoans.
Binding organisms: Archaeolithoporella, Tubiphytes, and cyanobacteria

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

Rock type and reef-related depositional characteristic:
Fore-reef slope: spiculitic-calcispherical cherty wackestone with reef breccias
Reef core: sponge framestone and bafflestone, Archaeolithoporella and cyanobacteria bindstone, sponge framestone with the encrusting Archaeolithoporella.
Reef flat (reef crest): packstone with reef breccia Reef base: echinodermal packstone to grainstone.
Back-reef lagoon: bioclastic packstone with calcareous algae, gastropods, and foraminifers.

Reef type: 
Metazoan reef at the shallow carbonate platform margin

Coordinates stated in text.