Beaver
(tree size 17)
Castor
Castoroides
(tree size 2)
Giant beaver
Palaeocastor
Agnotocastor
(tree size 2)
Trogontherium
(tree size 1)
Castorinae
(tree size 4)
Castorini
Migmacastor
(tree size 1)
Boreofiber
(tree size 2)
Agnotocastorinae
(tree size 2)
Euroxenomys
Castoroidinae
(tree size 6)
Palaeocastorinae
Trogontheriinae