Ibyka

Ibyka Temporal range: Middle Devonian to Upper Devonian PreЄ Є O S D C P T J K Pg N
Conservation status
Extinct  (IUCN 2.3)
Scientific classification
Kingdom:	Plantae
Division:	Pteridophyta
Class:	†Cladoxylopsida
Order:	†Iridopteridales
Genus:	†Ibyka
Species
†Ibyka amphikoma †Ibyka vogtii

Ibyka is an extinct genus of Iridopteridales, and a possible ancestor to horsetails.^[1]
The probable relationships within Equisetopsida are shown in the cladogram below. The position where Ibyka would be has been added.^[2]

	†Ibyka(?) †Pseudobornia ursina †Sphenophyllales †Archeocalamitaceae †Calamitaceae Equisetaceae

References

1. Thomas N. Taylor, Edith L. Taylor, Michael Krings: Paleobotany. The Biology and Evolution of Fossil Plants . Second Edition, Academic Press 2009, ISBN 978-0-12-373972-8 , p. 398-400.
2. "Introduction to the Sphenophyta". University of California Museum of Paleontology. Retrieved 31 July 2011.