Pseudopotamis is a genus of freshwater snails which have an operculum, aquatic gastropod mollusks in the family Pachychilidae.
Distribution It occurs on the Torres Strait Islands.
A sister group (the closest relative) of Pseudopotamis is genus Tylomelania.von Rintelen T., Stelbrink B. Marwoto R. M. & Glaubrecht M. (2014). "A Snail Perspective on the Biogeography of Sulawesi, Indonesia: Origin and Intra-Island Dispersal of the Viviparous Freshwater Gastropod Tylomelania". PLoS ONE 9(6): e98917. . Pseudopotamis and Tylomelania split in the Middle Miocene c. 19.5 Mya.
Species Species within the genus Pseudopotamis include: Pseudopotamis semoni Martens, 1894Glaubrecht M. & von Rintelen T. (2003). "Systematics, molecular genetics and historical zoogeography of the viviparous freshwater gastropod Pseudopotamis (Cerithioidea, Pachychilidae): a relic on the Torres Strait Islands, Australia". Zoologica Scripta 32: 415–435. . Pseudopotamis supralirata (E. A. Smith, 1887) - synonym: Pseudopotamis finschi Martens, 1894 - type species
Description Pallial oviduct evolved into an uterine brood (that release shelled juvenile snails).
Ecology Species in the genus Pseudopotamis are ovoviviparous.
References