Arthropods from region Linn County (Iowa, USA) Arachnida Lamarck, 1801 Arachnids | 26 43 48 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 4 4 4 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 4 4 4 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 8 18 7 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 194 835 1102 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 16 19 25 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 3 3 3 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 12 28 20 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 10 15 7 | Families Genera Species | Taxom
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