Copepoda (Copepods)
Infraclass: Neocopepoda
Superorder: Gymnoplea
Order: Calanoida
Family: Diaptomidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Mastigodiaptomus galapagoensis | Elías-Gutiérrez et al., 2023 | El Junco Lake copepod | 2004 | El Junco Lake, San Cristóbal Island, Galápagos Islands | Extinct | Access |
| Tropodiaptomus ctenopus | (Kiefer, 1930) | Comb-footed pelagic copepod | ? | Tananarive region, Madagascar | Extinct | Access |
Family: Phaennidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Xanthocalanus gracilis | Wolfenden, 1911 | - | (rediscovered) | Antarctic Ocean | Rediscovered | Access |
Family: Pseudocyclopidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pseudocyclops magnus | Esterly, 1911 | - | (rediscovered) | Barbados & Agar's Island, Bermuda | Rediscovered | Access |
Family: Pseudodiaptomidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pseudodiaptomus brehmi | Kiefer, 1938 | - | (rediscovered) | Lake Taal, Luzon & Lake Naujan, Mindoro Island, Philippines | Rediscovered | Access |
Family: Tharybidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Tharybis magna | Bradford & Wells, 1983 | - | (rediscovered) | Antarctic Ocean | Rediscovered | Access |
Superorder: Podoplea
Order: Cyclopoida
Family: Cyclopicinidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cyclopicina longifurcata | (Scott T., 1901) | - | (rediscovered) | North Atlantic | Rediscovered | Access |
Family: Cyclopidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Afrocyclops pauliani | Lindberg, 1951 | Madagascan cyclops, Paulian's cyclops | 1951 | Madagascar (near Antananarivo) | Extinct | Access |
Order: Harpacticoida
Family: Ameiridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Paranitocrella bastiani | Tang & Knott, 2009 | Bastian's groundwater copepod | 27 November 1997 | Yanchep National Park, Western Australia, Australia | Extant? | Access |
Family: Laophontidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Heterolaophonte hamatus | Jakobi, 1954 | - | (rediscovered) | Barbados & Brazil | Rediscovered | Access |
Order: Misophrioida
–No subordinate taxa
Order: Monstrilloida
–No subordinate taxa
Order: Mormonilloida
–No subordinate taxa
Order: Polyarthra
–No subordinate taxa
Order: Siphonostomatoida
Family: Cancerillidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cancerilla oblonga | Bartsch, 1975 | - | (rediscovered) | Luderitz Bay, Namibia & Cape Town, South Africa | Rediscovered | Access |
Infraclass: Progymnoplea
Order: Platycopioida
Family: Platycopiidae
–No subordinate taxa