Leptothecata Cornelius 1992

Leptothecata san en order faan näädeldiarten (Cnidaria) uun det klas faan a Hydrozoa.

Familin

Aequoreidae – Aglaopheniidae – Barcinidae – Blackfordiidae – Bonneviellidae – Campanulariidae – Campanulinidae – Cirrholoveniidae – Clathrozoidae – Dipleurosomatidae – Eirenidae – Haleciidae – Halopterididae – Hebellidae – Kirchenpaueriidae – Lafoeidae – Laodiceidae – Lineolariidae – Lovenellidae – Malagazziidae – Melicertidae – Mitrocomidae – Octocannoididae – Orchistomatidae – Phialellidae – Phialuciidae – Plumulariidae – Sertulariidae – Sugiuridae – Syntheciidae – Teclaiidae – Thyroscyphidae – Tiarannidae – Tiaropsidae