- WOK 16-42
- Item
- [1962]
Part of W.O. Kupsch fonds
Castroides. Skull of the giant Pleistocene beaver (top) compared with the skull of the living form. The history of the beaver is typical of the history of many mammals in that the living forms are smaller than their leistocene predecessors. In general, the larger members of any fauna disappear in times of stress. Stokes, 1960, p. 444.