English: This map illustrates the historical distribution (ca. 1900) of the Eastern Massasauga (Sistrurus catenatus). The species has been extirpated from 50% or more of its historic range and is found only in isolated, disjunct populations within its former range.
This map is based on maps and text in the following publications –
Minton, Sherman A. 1983.Sistrurus catenatus. Catalogue of American Amphibians and Reptiles. Society for the Study of Amphibians and Reptiles. 332.1 ‒ 332.2 pp.
Campbell, Jonathan A. and William W. Lamar. 2004. The Venomous Reptiles of the Western Hemisphere. Vol. II. Comstock Publishing Associates, a division of Cornell University Press. Ithaca, New York. 477‒870 pp. (pages 609‒614) ISBN 0-8014-4141-2
Ernst, Carl H. and Evelyn M. Ernst. 2011. Venomous Reptiles of the United States, Canada, and Northern Mexico. Vol. II. The Johns Hopkins University Press. Baltimore, Maryland. xviii, 352 pp. (pages 222‒239), ISBN 978-0-8018-9875-4
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Captions
Eastern Massasauga (Sistrurus catenatus) distribution