Bioherms, shelly-microbial buildups.The reef-core facies consists of Cloudina-thromboid to stromatoid-thromboid boundstones and floatstones. Due to neomorphism, the calcified
microbial communities are heterogeneously preserved, with clotted pseudospar textures
occurring directly encrusting both microsparitic substrates and shelly walls. The
microbial framestone is dominated by clotted, peloidal, fenestral textures, and subsidiary
stromatolitic microsparite/sparry textures. Predominant skeletal components are
Cloudina carinata, C. hartmanae (probably C. xuanjiangpingensis), Sinotubulites
baimatuoensis, and rare Protolagena sp.