Thecostraca
Subclass: Ascothoracida
Order: Dendrogastrida
–No subordinate taxa
Order: Laurida
–No subordinate taxa
Subclass: Cirripedia
Infraclass Acrothoracica
Order: Cryptophialida
–No subordinate taxa
Order: Lithoglyptida
–No subordinate taxa
Infraclass: [Rhizocephala]
Infraclass Thoracica
Order: Balanomorpha
Superfamily: Balanoidea
Family: Balanidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Titobustillobalanus tubutubulus | Carriol in Carriol & Álvarez-Fernández, 2015 | ca. 18,000 cal BP | Spain | Missing | Access |
Family: Pyrgomatidae
–No subordinate taxa
Superfamily: Chthamaloidea
Family: Catophragmidae
–No subordinate taxa
Family: Chionelasmatidae
–No subordinate taxa
Family: Chthamalidae
–No subordinate taxa
Family: Pachylasmatidae
–No subordinate taxa
Family: Waikalasmatidae
–No subordinate taxa
Superfamily: Coronuloidea
Family: Austrobalanidae
–No subordinate taxa
Family: Bathylasmatidae
–No subordinate taxa
Family: Chelonibiidae
–No subordinate taxa
Family: Coronulidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cetopirus polysyrinx | Collareta et al., 2022 | Late Pleistocene | California & Oregon, USA | Extinct | Access |
Family: Tetraclitidae
–No subordinate taxa
Superfamily: Elminioidea
–No subordinate taxa
Order: Calanticomorpha
–No subordinate taxa
Order: Iblomorpha
–No subordinate taxa
Order: Lepadiformes
Family: Heteralepadidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Paralepas maculata | Utinomi, 1980 | - | (rediscovered) | Japan | Rediscovered | Access |
Order: Pedunculata
Family: Neolepadidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Ashinkailepas indica | Gale in Gale et al., 2020 | Late Pleistocene | Krishna-Godavari Basin, India | Extinct | Access |
Order: Pollicipedomorpha
–No subordinate taxa
Order: Scalpellomorpha
–No subordinate taxa
Order: Sessilia
Family: Pyrgomatidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pyrgopsella annandalei | (Gruvel, 1907) | - | (rediscovered) | Andaman Islands, India | Rediscovered | Access |
Order: Verrucomorpha
–No subordinate taxa