''Ibyka'' is an extinct genus of

Iridopteridales Iridopteridales is an order of the extinct cladoxylopsids. It contains the genus ''Ibyka'' which is a possible ancestor of the horsetails.Thomas N. Taylor, Edith L. Taylor, Michael Krings: Paleobotany. The Biology and Evolution of Fossil Plant ...

, and a possible ancestor to

horsetails ''Equisetum'' (; horsetail) is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds. ''Equisetum'' is a "living fossil", the only living genus of the entire subclass Equisetidae, which f ...

.
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 Schoharie Reservoir is a reservoir in the New York City water supply system located in the Catskill Mountains of New York State. One of 19 reservoirs in the system, it was created by impounding Schoharie Creek, and feeds via the Ashoken Rese ...

. The probable relationships within

Equisetopsida Equisetidae is one of the four subclasses of Polypodiopsida (ferns), a group of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails. They typically grow in wet areas, with whorls of needle-like ...

are shown in the cladogram below. The position where ''Ibyka'' would be added.

References

Ferns Devonian plants Prehistoric plant genera {{devonian-plant-stub