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Genus Pseudocorythion

Shell is ovoid in ventral view, tapering at both ends, slightly flattened dorso-ventrally. Fundus carries a small pointed spine of variable length. Shell is covered with small or oval overlapping plates which are randomly arranged. Aperture is located on the ventral side; surrounded by a large circular collar of the same size as the maximum breadth of the shell. Outer edge of the collar is with very thin organic rim. Ecology: marine interstitial. Type species: Pseudocorythion acutum (Wailes, 1927)