Pleurogona

Pleurogona is an order of tunicates which is no longer in use as it contains the same families as Stolidobranchia.

One of the more invasive species of this order is the "stalked (or leathery or solitary) sea squirt" Styela clava. Other invasive genera include the "chain sea squirts" or "chain tunicates" of the genus Botrylloides and the "golden star tunicate" Botryllus schlosseri.