Pleurogona is an order of

tunicate A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time ca ...

s which is no longer in use as it contains the same families as

Stolidobranchia Stolidobranchia is an order of tunicates in the class Ascidiacea.Lambert, G.; Gittenberger, A.; Sanamyan, K. (2015)Stolidobranchia.In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Asci ...

. One of the more

invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ...

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

References

{{Taxonbar, from=Q545225 Ascidiacea Obsolete animal taxa Chordate orders