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Thursophyton ("plant from Thurso") is a form genus of extinct vascular plants known from anatomically preserved specimens originally described from the Givetian (Middle Devonian) of Scotland, and since reported from other parts of northern Europe. The taxonomic position of Thursophyton has been uncertain; most authors have considered it too imperfectly known to place, or have assigned it to the Lycopodiophyta. Unpublished research suggests similarities with spiny genera of the Zosterophyllopsida.
Text excerpted from the Wikipedia article Thursophyton by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
