North American Jumping Mice (Genus Zapus)

"North American Jumping Mice (Genus Zapus)" by Philip H. Krutzsch is a scientific study that explores the world of North American jumping mice. It looks at how these creatures are categorized, where they live, and how they have evolved over time. The study starts by explaining that jumping mice can be found all over northern North America. The author points out that even though new types of jumping mice have been discovered, not much detailed research has been done on them since the 1800s. He also mentions how the research was done, including working with different organizations and studying thousands of examples from many places, which sets the stage for an analysis of their history, features, and classification.