Maxillopoda Sessilia B. B. Balanus

Acorn Acorn-like Sitting Jaw-footed Joint-footed Animals

Maxillopoda is a diverse class of crustaceans including barnacles, copepods and a number of related animals. It does not appear to be a monophyletic group, and no single character unites all the members.

Maxillopoda. Retrieved May, 08 2021, from

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. The Brachylepadomorpha contain a single family, Neobrachylepadidae, while the Verrucomorpha contain two families, Verrucidae and Neoverrucidae. The remaining 12 families are in the suborder Balanomorpha.

Sessilia. Retrieved May, 08 2021, from

The Balanidae comprise a family of barnacles of the order Sessilia, containing these genera:

Balanidae. Retrieved May, 08 2021, from

Balanus is a genus of barnacles in the family Balanidae of the subphylum Crustacea.

This genus is known in the fossil record from the Jurassic to the Quaternary periods (age range: from 189. 6 to 0. 0 million years ago. ). Fossil shells within this genus have been found all over the world.

Balanus. Retrieved May, 08 2021, from