Otolith description

Otolith hour-glass shaped. Dorsal margin lobed; ventral margin dentate. Sulcus groove heterosulcoid; opening ostio-caudal. Colliculum homomorph. Crista superior prominent and bulbous above ostium and cauda; crista inferior absent. Rostrum large, broad and rounded, similar size to antirostrum. Pseudo-rostrum and pseudo-antirostrum of similar size, shape and definition as rostrum and antirostrum, respectively. Excisura and pseudo-excisura deep; angle acute. Ventral area groove present, which extends and increases in depth into the excisura and pseudo-excisura.

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