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Webster 1913 Edition

Arthrostraca

‖

Ar-thros′tra-ca

,
Noun.
pl.
[NL., fr. Gr.
ἄρθρον
joint + [GREEK] a shell.]
(Zool.)
One of the larger divisions of Crustacea, so called because the thorax and abdomen are both segmented; Tetradecapoda. It includes the Amphipoda and Isopoda.

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