See text Bathymodiolus is a genus of deep-sea mussels, marine bivalve molluscs in the family Mytilidae.

Many of them contain intracellular chemoautotrophic bacterial symbionts.

Modern (non-fossil) species within the genus Bathymodiolus include: There also are several fossil species, which are usually only tentatively assigned to hydrothermal vent and hydrocarbon seep-inhabiting mussel genera due to their conservative shell morphology and ongoing taxonomic revision of this group.

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