References

Hickman Jr., C.P., Roberts, L.S., Keen, S.L., Larson, A., and Eisenhour, D.J. 2009. Animal Diversity. McGraw-Hill, New York, NY, USA pg.186-188.

Lee, Y. 2007. Special animal abstract for Vertigo nylanderi (deep-throat vertigo). Michigan Natural Features Inventory, Lansing, MI. 4 pp.

Nekola, J.C. 2002. Distribution and Ecology of Terrestrial Gastropods in Northwestern Minnesota. Minnesota Department of Natural Resources.

Nekola, J.C. 2008. Land Snail Ecology and Biogeography of Eastern Maine. Reptile, Amphibian  & Invertebrate Group, Maine Department of Inland Fisheries & Wildlife and the Aroostook Hills and Lowlands Inventory.

Nekola, J.C. 2003. Terrestrial gastropod fauna of Northeastern Wisconsin and the Southern Upper Peninsula of Michigan. American Malacological Bulletin, Vol. 18.

Nekola, J.C., Coles, B.F., and Bergthorsson, U. 2009. Molecular Phylogentics and Evolution, Vol. 53:1010-1024.

Nekola, J.C. and Massart, P.A. 2000. Distribution and Ecology of Vertigo nylanderi Sterki, 1909 in the Western Great Lakes region. American Malacological Bulletin, Vol. 15(2).