Arthropods from region Missouri (USA) Arachnida Lamarck, 1801 Arachnids | 106 248 367 | Families Genera Species | Taxom
| Artiopoda ♰ Hou & Bergström, 1997 Artiopods | 1 1 1 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 6 6 7 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 7 16 21 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 20 25 33 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 15 48 42 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 443 3660 7255 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 43 66 187 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 6 8 7 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 1 2 1 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 35 86 108 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 59 165 182 | Families Genera Species | Taxom
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