approximately 600 individuals remain in a 3 x 20 meter side pool of a hot saline stream
salt spring omnivore endemic to Death Valley, California
specimens in Washington
declined as post-pluvial habitat disappeared and extreme salinity and thermal tolerances developed
References:
Brown, J. H. and Gibson, A. C. Biogeography. LOC QH84.B76 1983 ISBN 0-8016-0824-4 p. 225
Hawaii Ecosystems at Risk (HEAR), Endangered Species Hot Links
Nilsson, G. The Endangered Species Handbook QL82.N55 1983 ISBN 0-938-424-09-7
U.S. Fish & Wildlife Service, Endangered Species Home Page
Williams, J. and Nowak, R. chapter in The Last Extinction QH75.L36 1993
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