Arthropods from region Eastern Ontario (Southern Ontario, Ontario, Canada) Arachnida Lamarck, 1801 Arachnids | 134 376 600 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 11 21 28 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 5 10 13 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 13 26 34 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 13 44 84 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 475 4160 8046 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 66 100 133 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 15 28 34 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 2 2 0 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 37 66 74 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 27 39 31 | Families Genera Species | Taxom
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