Arthropods from region St. Clair County (Michigan, USA) Arachnida Lamarck, 1801 Arachnids | 40 87 104 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 4 7 7 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 10 18 2 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 213 970 1499 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 22 24 33 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 2 2 2 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 7 7 7 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 5 7 5 | Families Genera Species | Taxom
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