Mesodon altivagus was named by Pilsbry in 1900 (Pilsbry, 1940).

Mesodon altivagus: In Latin, "vagus" means roving or wandering. (Latin Dictionary, 2012) and
                                    "meso" means middle (Gillis, 2012) According to Pilsbry, "altivaga"
                                    translates as wanderer on the heights (Pilsbry, 1940).

Common name: Wandering Globe Snail (Encyclopedia of Life, 2012).

Kingdom: Animalia- Members of the kingdom Animalia are all multicellular and contains
                                              over 1.5 million animal species (Encyclopedia of Life, 2012).

        Phylum: Mollusca- Members of the phylum Mollusca are soft-bodied coelomates and
                                                  have a mantle that secretes the shell and creates a cavity for gills or
                                                  lungs. Members are found in terrestrial, marine, and freshwater
                                                  habitats (Hickman, 2009).     

                Class: Gastropoda- Members of the class Gastropoda are asymmetrical with a
                                                         well-developed head and a broad flattened foot. They have also
                                                         undergone torsion of 180 degrees because of the asymmetrical
                                                         coiling (Wilbur et al., 1964).

                        Order: Stylommatophora- Members of the order Sylommatophora are fully
                                                                                 terrestrial (loss of gills), undergo direct
                                                                                 development, and are true hermaphrodites
                                                                                 (Wilbur 1984).

                                Family: Polygyridae- Members of the family Polygyridae do not have a
                                                                             dart apparatus.

                                        Genus: Mesodon- Members of the Genus Mesodon are heliciform and
                                                                               contain transverse and spiral striations. Many
                                                                               species also have a parietal tooth (
Dourson, 2010).

                                                Species: Mesodon altivagus (Pilsbry 1900)- Mesodon
was named in 1900 by Henry Pilsbry. M.
contains a smaller dresden brown colored shell
                                                                    (Pilsbry 1940). They are commonly found in the Great   
                                                                    Smokey Mountains in Tennessee and North Carolina.
                                                                    Recent changes in their habitat, such as worsening air   
                                                                    quality, have led to a decline in their population

                                                                    (Florida Museum of Natural History, 2012)

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