Acorn barnacle
| Sessilia | |
|---|---|
 |
|
| Semibalanus balanoides | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Crustacea |
| Class: | Maxillopoda |
| Infraclass: | Cirripedia |
| Superorder: | Thoracica |
| Order: |
Sessilia Lamarck, 1818 |
| Suborders | |
Balanomorpha
Brachylepadomorpha
Verrucomorpha
Sessilia is an order of barnacles, comprising the barnacles without stalks, or acorn barnacles. They form a monophyletic group and are probably derived from stalked barnacles. The order is divided into three suborders. Brachylepadomorpha contains a single family, Neobrachylepadidae, while Verrucomorpha contains two families, Verrucidae and Neoverrucidae. The remaining twelve families are in the suborder Balanomorpha.
...
Wikipedia