These skulls were collected in Maryland in the 1980s, used in public programs in a Natural History Center, and more recently examined by students in environmental science classes. Most of these skulls were originally defleshed by dermestid beetles, fly larvae, and other insects which were drawn to an outdoor "rot barrel" in the woods in MD. This left them mainly free of soft tissue, but any such remains were recently removed with a combination of water, a 5% solution of sodium percarbonate, 3% Hydrogen Peroxide, and/or physical brushing and tweezing. The specimens were then dipped or painted with a solution made with equal parts white glue and water. A final clear coat of clear satin acrylic paint was applied over top of the glue solution layer.
This is possibly an Eastern Cottontail Rabbit skull, but it has not been certainly identified.