Piechocki R, Stiefel A
Anat Anz. 1977;142(4):374-84.
46 skulls of Castor fiber albicus aged from 0 to 2 years were studied morphologically and radiographically with regard to eruption and shedding of the teeth. According to the characteristics of the dentition the age of immature beavers until to 1 1/2 years can be determined with an error of about 4 weeks. Later the development of the roots and the apposition of cementum are to consider additionally.
对46只年龄在0至2岁的白俄罗斯河狸头骨进行了形态学和放射学研究，以观察牙齿的萌出和脱落情况。根据牙列特征，可确定未成年河狸至1.5岁的年龄，误差约为4周。之后还需额外考虑牙根的发育和牙骨质的沉积情况。
