- subtrapezoidal
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adj.
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Universalium. 2010.
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Universalium. 2010.
subtrapezoidal — adj … Useful english dictionary
cephalic shield — Chitinous or more or less calcified covering of the head region, formed of fused tergites of cephalic somites, commonly having pleura [McLaughlin, 1980]. Chitinous, more or less calcified covering structure of head region formed of fused tergites … Crustacea glossary