WMSD - Worldwide mollusc species DB Bagni Liggia

Class: GASTROPODA
--- Taxon Tree: HETEROBRANCHIA [Subclass] - PULMONATA [Infraclass] - HYGROPHILA [Order] - PLANORBOIDEA [Superfamily]
------ Family: PHYSIDAE Fitzinger, 1833 (Freshwater)
--------- SubFamily: PHYSINAE
------------ Genus: Physa J.P.R. Draparnaud, 1801
--------------- Species: Physa occidentalis G.W. Tryon, 1865 - ID: 5602000122
USA, California  Map center:  N: 35° 28' 33'' W: 119° 55' 33''  - Grid: 5° - click to open
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http://www.discoverlife.org
Please email your image to: Claudio Galli - last updated: 28/ago/2017