Barnacles and their relatives are all crustaceans, with the copepods and ostracods (seed shrimps) being the most numerous species. Most are tiny - only a millimeter or so in size. Some have adopted a parasitic way of life.
Goose barnacles (Pedunculata)Goose barnacles are odd-looking crustaceans usually found in quite deep water. Occasionally they can be found on debris that has become dislodged from the sea bed and washed up on the shore.
Maxillopoda is a class under the phylum Arthropoda, subphylum Crustacea, and is characterised by a reduction of the abdomen and its appendages. The most species-rich groups are the barnacles and copepods.
The head is made up of 5 (five) segments, the thorax 6 (six) segments and the abdomen 4 (four) segments, as well as a telson. There are no appendages on the abdomen.
A common Maxillopoda are the many barnacles, often seen covering anything hard.
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Phylum: Arthropod (Arthropoda)
Class: Maxillopoda
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