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GenusOpheliaSavigny, 1822 Type species. Ophelia bicornis Savigny, 1822. Diagnosis. (after Blake and Maciolek 2020) Body fusiform; anterior region swollen; posterior region tapered, with deep ventral groove and paired lateral grooves. Segments annulated. Prostomium a small, pointed cone without appendages; nuchal organs paired. Branchiae cirriform, usually single, rarely bifid, absent from anterior chaetigers and a few terminal chaetigers; rarely absent altogether. Parapodia reduced, with small bundles of simple capillary chaetae; lateral organ between rami. Pygidium usually with two stout ventral lobes and several smaller dorsal papillae.
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Zhang et al. (2026) studied this question.
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