Nothofagusmacrofossils from the Tertiary of Tasmania

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Abstract
Leaves assignable to Nothofagus from two fossil deposits in Tasmania represent the first macrofossils of this genus from the Tertiary in southeastern Australia. One fossil species, N. johnstonii, is closely related to the extant Australian species N. cunninghamii while the other fossil species, N. tasmanica, has very close affinites with the extant Australian species N. moorei. All four of these species are closely interrelated. The pollen type produced by the fossil species is unknown, since all three types are present in the microfloras. However, both N. cunninghamii and N. moorei produce N. menziesii-type pollen. The macrofossils confirm the conclusion from pollen studies that evolution in Nothofagus has occurred very slowly.

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