Very-thick-bedded sponge framestones and thick-to-very-thick-bedded bioclastic grainstones. Fossils are diverse and abundant and include calcareous sponges, calcareous algae, echinoderms, corals, small foraminifers, fusulinids, brachiopods. Clarkina yini zone. Shallow marine, low- to middle
energy zone. Coordinates stated in the text, decimal.