A non-technical, illustrated key, intended to be used in the field. Written for the student, hiker, or naturalist who comes upon mammal remains and wishes to know what kind of a beast it was. Identifies the skulls and jaws to species (or species groups for many of the small, difficult-to-identify species, enabling one to enter quickly into the technical comprehensive keys). Covers the native and domesticated mammals of the United States and southern Canada. Unusual in making possible identification from lower jaws alone.nSpecifications:nnPrinted ManualnPublished 1986n5.5 X 8.5 inchesnCard stock cover with a heavy-duty metal spiral bind.n39 pages