Manchester, S.R. 1991. Cruciptera, a new juglandaceous winged fruit from the Eocene and Oligocene of western North America. Systematic Botany 16:715-725.
Paleobotany + Palynology
Manchester, S.R. 1991. Cruciptera, a new juglandaceous winged fruit from the Eocene and Oligocene of western North America. Systematic Botany 16:715-725.