Isoetes beestonii

Species of spore-bearing plant

Isoetes beestonii is a species of isoetalan plant from the latest Permian of New South Wales and Queensland. Originally considered earliest Triassic, it is now known to be latest Permian in age, immediately before the Permian Triassic mass extinction. It has been suggested to be the earliest member of the genus Isoetes, which contains living quillworts, though it differs from living Isoetes in some aspects, with modern forms of Isoetes possibly emerging during the Jurassic.

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