“…Members of the superfamily are particularly diverse in the tropics and subtropics and occupy a variety of marine, estuarine, and freshwater habitats including mangrove forests (potamidids), estuarine mudflats (batillariids), seagrass beds (modulids, cerithiids), rocky intertidal shores (cerithiids, planaxids), algal fronds (litiopids), fast-flowing streams and rivers (pleurocerids, melanopsids, thiarids), and quiet lakes (pleurocerids, thiarids) (Houbrick, 1988;Healy and Wells, 1998). Cerithioideans are presumed to be monophyletic, representative basal members of the major gastropod clade Caenogastropoda and to play a fundamental role in evaluating higher-order phylogenetic studies of gastropods (Haszprunar, 1988;Ponder and Lindberg, 1997;Harasewych et al, 1998;Colgan et al, 2000).…”