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Arthrostraca

plural noun Ar·thros·tra·ca \ ärˈthrästrəkə \

Definition of Arthrostraca

in some classifications
:a division of Crustacea comprising the orders Amphipoda, Isopoda, and usually Tanaidacea in which both thorax and abdomen are segmented and there are seven pairs of thoracic appendages

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Origin and Etymology of arthrostraca

New Latin, from arthr- + -ostraca

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