Arthropods from region Monterey (Berkshire County, Massachusetts, USA) Arachnida Lamarck, 1801 Arachnids | 1 1 3 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 3 3 0 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 52 76 66 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 8 9 9 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 8 9 8 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 1 1 0 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 1 1 1 | Families Genera Species | Taxom
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