Waterford Press Duraguide Animal Skulls & Bones
Waterford Press says:
This nearly indestructible Duraguide teaches how to identify the skulls and bones of common North American mammals, birds, reptiles and amphibians.
* Shows how to interpret the behavior of animals based on their skull and limb shape, and dental patterns.
* Step-by-step instructions for preparing and preserving specimens
* Includes 20-inch (50 cm) field ruler