The Armed Snaggletooth (Gastrocopta armifera)


G. armifera is found in calcareous areas over most of the eastern United States, ranging west to Colorado and New Mexico. It is absent from the Piedmont and southern Atlantic Coastal Plain, and from peninsular Florida. Its northern limits are not well understood because of confusion with G. similis. (Hubricht, 1972). The armed snaggletooth is a calcium-lover, occurring most abundantly on rich sites (Carnegie, 2011), as well as open, sunny, grassy locations including cedar glades (Peacock, 2003). Because G. armifera is found so widely across the United States, there are several regional forms reported (Pilsbry, 1948).

The shells of G. armifera are found most abundantly in the limestone regions of the south and east, although it can be found on the rich soils anywhere in the Keystone State as well(Carnegie, 2011). In the United States the Armed Snaggletooth has been reported throughout the east, from Vermont to North Dakota in the north and from Texas to Florida in the south(Hubricht, 1972).

G. armifera is many times found in, and prefers a xeric habitat (Fitch, 1956). To cope with such dry (xeric) conditions, G. armifera has evolved lamellae.

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Cedar Glades of Wilson County Tennessee