Domain-Eukarya These members have membrane bound organelles and a true nucleus (Hickman et al., 2007).
Kingdom-Animalia Organisms are multi-cellular and lack a cell wall, which distinguishes them from the Kingdom Plants. They are heterotrophic and digest their food internally rather than through absorption similar to the Kingdom Fungi (Hickman et al., 2007).
Phylum-Mollusca The Latin word molluscus means soft. Individuals in this phylum are triploblastic with a eucoelomate, have bilateral symmetry, and have a basic body plan including a mantle, visceral mass, and muscular foot. This phylum has three defining characteristics consisting of the mantle, shell and radula (Hickman et al., 2007).
Class-Gastropoda The Greek terms gaster and podos mean stomach-foot. The members in this class all go through a developmental process called torsion. This means that there is a 180 degree twist of the visceral mass (Hickman et al., 2007).
Subclass-Pulmonata Pulmo is Latin for lung. Members lack gills, however their mantle has an air breathing lung. This is due to the majority being land and freshwater snails. Members of this subclass additionally have two pairs of tentacles with sessile eyes located on the posterior pair (Hickman et al., 2007).
Order-Basommatophora This order is known for having only one pair of tentacles that are flattened and triangular or subcylindrical contractile. The eyes are located at the base of the tentacle, the Greek terms basis means base, ommatos means eye, and phoros means bearing (Leonard, 1959).
Family-Lymnaeidae The species in this family have triangular tentacles that are wide and flat. Their heads are divided into two flat lateral lobes and their shells usually spiral to the right. All members are hermaphrodites (Nordsieck, 2011).
Genus-Stagnicola Stagnum means standing body of water, pond or pool and species in live in stagnant waters that are rich in vegetation (Nordsieck, 2011).
Species-Stagnicola elodes This species has shown some morphological variation over time. Stagnicola elodes has been named a different species or a new species many times (University of Michigan, 2008).


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