BIO 203


Kingdom: Animalia
    Phylum: Mollusca
        Class: Gastropoda
            Order: Stylommatophora
                Family: Polygyridae
                    Genus: Euchemotrema
                        Species: Euchemotrema wichitorum

Animalia: All animals are members of the Kingdom Animalia (Animal Diversity Web, 2012). Animals lack a cell wall and all are multicellular. Though no all species of animals have been discovered, it is estimated there there are roughly 9 to 10 million species that inhabit earth (Animal Diversity Web, 2012).

Mollusca: Animals in the Phylum Mollusca live in freshwater, marine and moist terrestrial habitats. They have a dorsal body wall that forms a pair of folds, called a mantle, and its ventral body wall is specialized as a muscular foot, chiefly used for locomotion (Hickman et al, 2009). The mantle is modified into either gills or air-breathing lungs.

Gastropoda: Gastropoda is the largest and most diverse class in the phylum Mollusca. Currently there are about 70,000 living species (Hickman et al, 2009). Its members includes snails, slugs, sea slugs, limpets, and others. Their shell, if present, is either uncoiled or coiled, through a process called torsion.

Stylommatophora: The order Stylommatophora is composed of pulmonate snails and slugs, all of which are terrestrial (Illinois Natural History Survey, 2001)

Polygyridae: This family is endemic to North America, its distinctive is the reflected lip about the aperture in adults (Martin, 2000)

Euchemotrema: This genus of terrestrial air-breathing snails generally have a shell possessing about 5 whorls and a light tan to dark brown color (Branson, 1972).

Euchemotrema wichitorum: This species of land snail gets its name from the Wichita Mountains where it is primarily found.