Arthropods from region Clayton County (Iowa, USA) Arachnida Lamarck, 1801 Arachnids | 20 34 37 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 2 2 2 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 4 5 5 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 8 23 14 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 233 1072 1569 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 9 11 13 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 5 5 5 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 19 40 67 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 11 14 16 | Families Genera Species | Taxom
|
|