Familia Potamidae

Ortmann, 1896

Carapace usually broader than long. Dorsal surface rugose, with well defined regions. Antero-lateral margins usually arcuate and ranging from being almost smooth to strongly toothed. Mandibular palp with three articles, the terminal one undivided. Third maxillipeds: exopod with flagellum well developed, short, vestigial or absent. G1 slender or stout, with terminal section shorter than the subterminal, directed laterally, tapered and acute. (Guinot 1998)

Type genus: Potamon Savigny, 1816.

Genera treated:
genus Candidiopotamon Bott, 1967
genus Geothelphusa Stimpson, 1858
genus Nanhaipotamon Bott, 1968
genus Ryukyum Ng & Shokita, 1995

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