Distribution
Vertigo paradoxa is a terrestrial snail that has a varied and sometimes widespread distribution. This species has been found as far north as Canada, in Alberta, Newfoundland, Nova Scotia, Ontario, and Quebec (Sterki, 2007). Vertigo paradoxa has also been found in nine state within the United States, including Maine, some of the upper Midwest states and Wyoming. (Sterki, 2007). Kansas and Nebraska have also had fossil remains found of Vertigo paradoxa (Sterki, 2007).
Jeff Nekola has conducted many surveys in the Great Lakes region
and has
found Vertigo paradoxa in Maine, Michigan, Minnesota,
Vermont, New York, and Wisconsin (Sterki, 2007). Nekola reports
Vertigo paradoxa being found in 63 locations, which were
found in six states totaling 2,206 individuals
(Sterki, 2007). This
species has also been reported in the Black Hills in South Dakota and Wyoming.
(Sterki, 2007).
Vertigo paradoxa has been studied extensively in Wisconsin and Michigan. In Michigan,
the Mystery Vertigo has been reported recently from seven
counties in the Upper Peninsula; Chippewa,
Gogebic, and Schoolcraft county to name a few
(Sterki, 2007).
A study was conducted
from 1996 to 2001 in eastern Wisconsin and the southern Upper
Peninsula of Michigan determining if the species of Vertigo
snails were present and their distribution patterns. From this
study, there were 18 different locations were Vertigo
paradoxa was encountered (Nekola,
2003). The population of this snail tended to be
found in soil pockets or wood cliffs and were most commonly
spotted toward the eastern side of Wisconsin
(Nekola,
2003).
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