Aplanulata
Aplanulata is a suborder of Hydrozoa, a class of marine and freshwater invertebrates belonging to the phylum Cnidaria.Families
According to the World Register of Marine Species, the following families are found in this suborder :
- Acaulidae Fraser, 1924
- Boeromedusidae Bouillon, 1995
- Boreohydridae Westblad, 1947
- Candelabridae Stechow, 1921
- Corymorphidae Allman, 1872
- Hydridae Dana, 1846
- Margelopsidae Uchida, 1927
- Paracorynidae Picard, 1957
- Protohydridae Allman, 1888
- Tubulariidae Goldfuss, 1818
