The Apostomatida are an order of ciliate protozoa of the class Oligohymenophorea. Individuals of the order are called apostomes. They are symbiotic with Crustacea. They are dormant and encysted on their host's exoskeleton for the majority of their life cycle.
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