Glebula rotunda, the round pearlshell, is a freshwater mussel, aquatic bivalve mollusks in the family Unionidae. It is in the monotypic genus Glebula. It is found on the drainages of the Gulf Coast, as well as in Arkansas and Oklahoma.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0