Arthropods from region Grey County (Southwestern Ontario, Ontario, Canada) Arachnida Lamarck, 1801 Arachnids | 80 226 374 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 5 10 8 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 5 5 7 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 9 18 21 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 9 19 22 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 338 2157 3325 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 28 40 49 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 5 7 6 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 18 30 41 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 11 12 5 | Families Genera Species | Taxom
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