Microbialite (2.5 m thick) is composed mainly of dendrolite. The basal layer of the microbialite is flat and layered, and its upper part is strongly domed. Shell beds are intercalated between domes. At the top, the dome-shaped microbialite flattens horizontally, and is overlain by muddy limestone. Conodont H. parvus was found in the horizon 0.45 m above the bottom of the microbialite.