Persiculida

Pseudostichopus is a genus of sea cucumbers belonging to the monotypic family Pseudostichopodidae. The genus has a cosmopolitan distribution.

Persiculida is an order of sea cucumbers. Taxa within the order Persiculida were previously classified in an order called Aspidochirotida, which was determined to be polyphyletic in 2017.

Gephyrothuriidae is a family of sea cucumbers belonging to the order Persiculida.

Molpadiodemas is a genus of sea cucumbers belonging to the monotypic family Molpadiodemidae. The genus has an almost cosmopolitan distribution.