Urostylida is an order of littoral ciliates. The taxonomy of the order is largely unresolved and still subject to scientific inquiry.
Families According to the Catalogue of Life, nine families are accepted within Urostylida.
Bakuellidae Holostichidae Kahliellidae Pseudokeronopsidae Pseudourostylidae Psilotrichidae Rigidothrichidae Trachelostylidae Urostylidae
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