Physodictyon Lindberg, 1927: 16 (as genus; syn. Drake, 1948c: 179, with Cochlochila; downgraded to subgenus by Duarte Rodrigues, 1982b: 163). Type species by original designation: Physodictyon vesicarius Lindberg, 1927 (= Monanthia conchata Matsumura, 1913).
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