Complex sentence: Two species have been named, "M. zhaoianus" and "M. gui", though further study has suggested that all of the specimens belong to a single species, which is properly called "M. zhaoianus".
Split into simpler sentences: Two species have been named, "M. zhaoianus" and "M. gui". It has recently been suggested that all of the specimens belong to a single species, which is properly called "M. zhaoianus".