Phylum - Arthropoda
Common name: Insects, Crustaceans, Millipedes, Centipedes, Spiders, Scorpions, Springtails, Harvestmen, Horseshoe Crabs
Name derivation: “jointed leg”
- Class: Branchiopoda
- Class: Cephalocarida
- Class: Chilopoda
- Class: Collembola
- Class: Copepoda
- Class: Diplopoda
- Class: Diplura
- Class: Insecta
- Class: Malacostraca
- Class: Maxillopoda
- Class: Merostomata
- Class: Ostracoda
- Class: Pauropoda
- Class: Protura
- Class: Pycnogonida
- Class: Remipedia
- Class: Symphyla
- Class: Tantulocarida
- Class: Trilobita EXTINCT
Order Count: 162
Family Count: 4,310
Genus Count: 118,504
Species Count: 1,214,664
Earliest Fossil Record: Early Cambrian 537 mya
Habitat: Terrestrial, Marine, Freshwater, Parasitic
Size Range: 0.1 mm to 4 m (leg span)
Notes: Based on Catalogue of Life as of March 2025
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