A new species of Acer samaras from the Miocene Yeonil Group in the Pohang Basin, Korea

摘要

Acer pohangense sp. nov. belonging to Aceraceae is described based on the six detached samaras collected from the Duho Formation of the Miocene Yeonil Group. This species is characterized by its comparatively large-sized samara with a wing and seed, and its wide divergent angle. The occurrence of such a large-sized samara is the first on record not only in the Korean Tertiary floras, but also in the East Asian Tertiary floras.