Megasphaera

Megasphaera is a genus of Bacillota bacteria classified within the class Negativicutes.

This classification has been reexamined. It appears that this genus is a member of the Clostridia.

Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI)

Unassigned species:
 * "M. vaginalis" Bordigoni et al. 2020 non Srinivasan et al. 2021