Supaia is an extinct genus of fern-like plants, possibly seed ferns. Species belonging to the genus lived during the Permian in North America, east Asia,Heilongjiang Stratigraphic Group. 1979. The Stratigraphic Tables of Heilongjiang. Geology Press 1-300 and Madagascar. The leaves were adapted to minimize water loss, and the genus is thought to have grown as small trees (up to in height) in a mudflat environment subject to frequent drought.
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