Before revision:  We demonstrate the potential of this formulation by applying it to explain the stepwise morphologenesis of seashells during growth: New material surfaces are laid down by accretive growth on the mantle whose form is determined by its morpho-elastic growth.
After revision:  We exercise this framework by applying it to explain the stepwise morphologenesis of seashells during growth: New material surfaces are laid down by accretive growth on the mantle whose form is determined by its morpho-elastic growth.