Appendix A. Spotted salamander (Ambystoma maculatum), wood frog (Rana sylvatica), and American toad (Bufo americanus) adults and egg clutches, showing differences in clutch structure.

Spotted salamander (Ambystoma maculatum), wood frog (Rana sylvatica), and American toad (Bufo americanus) adults and egg clutches, showing differences in clutch structure.