Arthropods from region Utah (West USA, USA) Arachnida Lamarck, 1801 Arachnids | 151 377 564 | Families Genera Species | Taxom
| Artiopoda ♰ Hou & Bergström, 1997 Artiopods | 3 4 2 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 9 10 18 | Families Genera Species | Taxom
| Chilopoda Latreille, 1817 Centiped, Centipede, Centipedes, Centipeds, Chilopods | 7 27 61 | Families Genera Species | Taxom
| Dinocaridida Collins, 1996 Wedgeheads | 2 4 5 | Families Genera Species | Taxom
| Diplopoda De Blainville in Gervais, 1844 Diplopods, Millepedes, Millipede, Millipedes | 21 28 33 | Families Genera Species | Taxom
| Entognatha Stummer-Traunfels, 1891 Entognathids | 12 37 18 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 461 4259 11358 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 39 44 53 | Families Genera Species | Taxom
| Maxillopoda Dahl, 1956 Maxillopods | 9 13 10 | Families Genera Species | Taxom
| Megacheira ♰ Hou & Bergström, 1997 Great appendage arthropods | 2 3 3 | Families Genera Species | Taxom
| Merostomata Woodward, 1866 Horseshoe crabs, Merostomates | 0 0 0 | Families Genera Species | Taxom
| Ostracoda Latreille, 1802 Mussel shrimps, Ostracods, Seed Shrimps | 27 57 64 | Families Genera Species | Taxom
| Thylacocephala ♰ Pinna & al., 1982 Bivalve arthropods | 0 3 4 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 77 292 424 | Families Genera Species | Taxom
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