There are four classes of Arthropods:
Chelicerates, such as spiders, mites, ticks, scorpions, horseshoe crabs
Trilobites (extinct)
Crustaceans, such as lobsters, crabs, and shrimp
Uniramians, such as millipedes, centipedes, and insects
![](https://marinhike.com/wp-content/uploads/2020/04/IMG_5071-1024x576.jpg)
![](https://marinhike.com/wp-content/uploads/2020/04/IMG_5065.jpg)
![](https://marinhike.com/wp-content/uploads/2020/04/IMG_5070.jpg)
![](https://marinhike.com/wp-content/uploads/2020/04/IMG_5109-1-1024x576.jpg)
![](https://marinhike.com/wp-content/uploads/2019/03/IMG_7196-2.jpg)
![](https://marinhike.com/wp-content/uploads/2019/03/IMG_7199-1024x768.jpg)
![](https://marinhike.com/wp-content/uploads/2019/05/IMG_0619.jpg)
![](https://marinhike.com/wp-content/uploads/2020/03/P3070087.jpg)
There are four classes of Arthropods:
Chelicerates, such as spiders, mites, ticks, scorpions, horseshoe crabs
Trilobites (extinct)
Crustaceans, such as lobsters, crabs, and shrimp
Uniramians, such as millipedes, centipedes, and insects