| Classe | Ordre | Famille |
| CRUSTACEA | Decapoda Latreille, 1802 | Alpheidae Rafinesque, 1815 |
| | | Astacidae Latreille, 1802 |
| | | Atelecyclidae Ortmann, 1893 |
| | | Atyidae de Haan, 1849 |
| | | Brachyura Linnaeus, 1758 |
| | | Calappidae De Haan, 1833 |
| | | Callianassidae Dana, 1852 |
| | | Cambaridae Hobbs, 1942 |
| | | Cancridae Latreille, 1802 |
| | | Carcinidae MacLeay, 1838 |
| | | Coenobitidae Dana, 1851 |
| | | Crangonidae Haworth, 1825 |
| | | Diogenidae Ortmann, 1892 |
| | | Epialtidae MacLeay, 1838 |
| | | Eriphiidae MacLeay, 1838 |
| | | Galatheidae Samouelle, 1819 |
| | | Gecarcinidae MacLeay, 1838 |
| | | Goneplacidae MacLeay, 1838 |
| | | Grapsidae MacLeay, 1838 |
| | | Hippolytidae Spence Bate, 1888 |
| | | Hymenosomatidae MacLeay, 1838 |
| | | Inachidae MacLeay, 1838 |
| | | Leucosiidae Samouelle, 1819 |
| | | Lysmatidae Dana, 1852 |
| | | Majidae Samouelle, 1819 |
| | | Nephropidae Dana, 1852 |
| | | Ocypodidae Rafinesque, 1815 |
| | | Paguridae Latreille, 1802 |
| | | Paguroidea |
| | | Palaemonidae Rafinesque, 1815 |
| | | Palinuridae Latreille, 1802 |
| | | Panopeidae Ortmann, 1893 |
| | | Pilumnidae Samouelle, 1819 |
| | | Pinnotheridae De Haan, 1833 |
| | | Polybiidae Ortmann, 1893 |
| | | Porcellanidae Haworth, 1825 |
| | | Portunidae Rafinesque, 1815 |
| | | Potamidae Ortmann, 1896 |
| | | Processidae Ortmann, 1896 |
| | | Raninidae De Haan, 1839 |
| | | Rhynchocinetidae Ortmann, 1890 |
| | | Scyllaridae Latreille, 1825 |
| | | Sesarmidae Dana, 1851 |
| | | Thoridae Kingsley, 1879 |
| | | Upogebiidae Borradaile, 1903 |
| | | Varunidae H. Milne Edwards, 1853 |
| | | Xanthidae MacLeay, 1838 |
