Monogononta

Monogononta is a class of rotifers, found mostly in freshwater but also in soil and marine environments. They include both free-swimming and sessile forms. Monogononts generally have a reduced corona, and each individual has a single gonad, which gives the group its name. Males are generally smaller than females, and are produced only during certain times of the year, with females otherwise reproducing through parthenogenesis.

Ploima is an order of rotifers, microscopic invertebrates found in marine and freshwater habitats.

Flosculariaceae is an order of rotifers, found in fresh and brackish water.

Collothecaceae is an order of rotifers belonging to the class Monogononta.