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TetranemertesantoninaA external appearance of T.antonina, after Bürger (1895)B central stylet of T.antonina after Bürger (1895). Tetranemertesantonina neotype (specimen: TR3-DR23, Museum ID: MNCN 5.02/28) C external appearance of living specimen and D head in transmitted light showing distribution and number of ocelli. Abbreviations: ae — anterior end, cg — cerebral ganglion, co — cerebral organ. Scale bars: 4 mm (C); 0.75 mm (D).
