author
b. 1919
A zoologist and bat researcher, he wrote detailed scientific work on North American mammals and later helped shape research on bat reproduction. His career connected field natural history with anatomy and reproductive biology.

by Philip H. (Philip Henry) Krutzsch
Philip H. Krutzsch was an American zoologist born in 1919. His early published work included North American Jumping Mice (Genus Zapus), issued through the University of Kansas in 1954, showing his grounding in mammalogy and taxonomy.
Later, he became closely associated with bat research. Sources identify him as Professor Emeritus in the Department of Cell Biology and Anatomy at the University of Arizona College of Medicine, and describe him as especially known for studies of bat reproductive anatomy and physiology. He also co-edited Reproductive Biology of Bats, a major scholarly volume on the subject.
Krutzsch remained active in the bat-research community for many years; a history of the North American Society for Bat Research notes that he served as host for its early Tucson meeting. Obituary records report that he was born on July 12, 1919, and died on November 7, 2018.