| Phylum | Sub-phylum | Class | Subclass | Examples |
| Arthropoda | Chelicerata | Euchelicerata | Arachnida | Spider, scorpions |
| Xiphosura | Horseshoe crab | |||
| Pycnogonida | Pantopoda | Sea spiders | ||
| Crustacea |
|
|
| |
|
| Hexapoda | Collembola |
| Springtails |
| Diplura |
|
| ||
|
|
| Insecta | archaeognatha |
|
| dicondylia | Zygentoma | |||
| Pterygota | Winged insect | |||
| Protura |
| coneheads | ||
| Myriapoda | Chilopoda |
| centipedes | |
| Diplopoda |
| millipedes | ||
| Pauropoda |
|
| ||
| Symphyla |
| pseudocentipedes |