![]() Grasses were part of the regional flora, but there is no evidence for grasslands per se. ![]() Species typical of wetter rainforest types growing in the region during the Oligocene to Middle Miocene had become rare or extinct at Grange Burn by 4.46 Ma although Nothofagus ( Brassospora) may have survived on adjacent uplands such as the Grampian and Otway Ranges. The two lines of evidence concur that the Early Pliocene vegetation was a mosaic of araucarian (dry) rainforest and open-canopied sclerophyll formations, developed under mildly seasonal, humid climates. One of the few independently dated (4.46 Ma) sites in Australia where an important assemblage of marsupial fossils is preserved in association with plant remains is at Grange Burn near Hamilton in southwest Victoria.
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