Microcystina atoni

Microcystina atoniThe shell is lenticular, with an almost flat or slightly elevated spire. Spiral sculpture is absent from the protoconch and teleoconch. The umbilicus is open and narrow, with a very thick columellar wall. Dry shells have been collected from a limestone outcrop at Gunung Batu, Bau, Sarawak, Malaysia. The shell type specimens are recorded from Gunung Batu, Bau, Sarawak, Malaysia.What does it look like?The shell is lenticular, with an almost flat or slightly elevated spire.Where and how does it live?Dry shells have been collected from a limestone outcrop at Gunung Batu, Bau, Sarawak, Malaysia.Spiral sculpture is absent from the protoconch and teleoconch.The umbilicus is open and narrow, with a very thick columellar wall.Keeping it safeAn extinction-risk assessment has not been added yet.