Arthropods from region Winchester (Washakie County, Wyoming, USA) Arachnida Lamarck, 1801 Arachnids | 2 2 2 | Families Genera Species | Taxom
| Branchiopoda Latreille, 1817 Branchiopods, Brine shrimps, Daphnia, Fairy shrimps and Water fleas, Phyllopods | 1 1 1 | Families Genera Species | Taxom
| Insecta Linnaeus, 1758 Insects, True insects | 38 68 76 | Families Genera Species | Taxom
| Malacostraca Latreille, 1802 Higher Crustaceans, Malacostracans | 5 5 5 | Families Genera Species | Taxom
| Trilobita ♰ Walch, 1771 Trilobites | 4 4 2 | Families Genera Species | Taxom
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