Entomostraca
From ZooTerms (Dictionary of Invertebrate Zoology)
Entomostraca also entomostracan (noun; Greek entomon, insect; ostrakon, shell): Formerly considered a single natural group of Crustacea including Brachiopoda, Ostracoda, Copepoda, Branchiura and Cirripeda which is no longer acceptable to systematists.
