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Author
Series
North American fauna volume no. 42
Summary
Characterizes five transcontinental life zones in Wyoming; defines their extent and limits; lists mammal, breeding bird, reptile, amphibian, and plant species; and provides notes on distribution and abundance of trees observed during the survey.
Author
Series
North American fauna volume no. 41
Summary
Discusses distribution, sexual and age differences, specimens, and classification of North American grizzly and big brown bears. Describes and lists locations of species and subspecies. Mentions Vetularctos, a new genus related to Ursus.
