Description
Anterior end completely ciliated; attachment structure absent with only a single sagittal anterior suture extending (from anterior pole along one surface (Fig . 21 ). arenarius . (from de Puytorac, 1972)
Type species
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Raw text
Anterior end completely ciliated; attachment structure absent with only a single sagittal anterior suture extending (from anterior pole along one surface (Fig . 21 ). arenarius . (from de Puytorac, 1972)