unisulcate en · ADJ
Etymology
From uni- + sulcate.
Meanings
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(not-comparable) Having a single sulcus.
In both cases the histial dolon is united anteriorly with the velar dolon and both genera are also similar in being unisulcate.
2011, N. Ikeya, K. Ishizaki, T. Hanai, Evolutionary Biology of Ostracoda, page 1045: