"EX" . "Leptoxis torrefacta"@en . "\u2020Leptoxis torrefacta was a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species was endemic to the United States. It is now extinct."@en . . . . . . "IUCN2.3" . . .