Acer castorrivularis

Acer castorrivularis is an extinct maple species in the family Sapindaceae described from a solitary fossil leaf. The species is known from the latest Eocene sediments exposed in the state of Montana, USA. It is one of several extinct species placed in the living section Macrantha.

Acer castorrivularis

Acer castorrivularis is an extinct maple species in the family Sapindaceae described from a solitary fossil leaf. The species is known from the latest Eocene sediments exposed in the state of Montana, USA. It is one of several extinct species placed in the living section Macrantha.