Arthropods from region Orleans (Barnstable County, Massachusetts, USA) Arachnida Lamarck, 1801 Arachnids | 3 4 5 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 2 2 2 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 35 72 90 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 3 3 3 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 1 1 1 | Families Genera Species | Taxom
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