Abstract

• The investigated area is situated in Hopang Township, Wa Self-Administered Division, northern Shan State, Myanmar. The Plateau Limestone of the study area mainly consisted of medium-to thick-bedded, light grey to grey limestone. Most fossils found are fragmentary; complete fossils are rare or absent. The lithology is not much changed except fossils become more complete than the lower. They contain crinoid stems and unidentifiable shells of gastropod, fragments of bryozoan, Syringopora, and solitary corals. It is followed by medium-bedded limestone with more fossil fragments appear in the fusuline horizon composed of gastropods, crinoid stems, corals and a small number of chert nodules. The abundant Cancellina species were found in the Hopang limestone. The associating genera include Pseudofusulina, Parafusulina, Nankinella and Toriyamaia. The dominance of Cancellina and absence of both Misellina and Neoschwagerina indicate a Kubergandian (Late Kungurian) age.