Ibyka is an extinct genus of Iridopteridales, and a possible ancestor to horsetails.Thomas N. Taylor, Edith L. Taylor, Michael Krings: Paleobotany. The Biology and Evolution of Fossil Plants . Second Edition, Academic Press 2009, , p. 398-400. The name comes from the poet Ibykos because the discovery of the fossil was due to the activity of construction cranes during the construction of the Gilboa Dam. The probable relationships within Equisetopsida are shown in the cladogram below. The position where Ibyka would be added.
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