Calamophyton

Calamophyton is an extinct genus of tree, or "tree-sized plant", that was extant in the Middle Devonian period. As of 2024, a well-preserved fossilized forest of Calamophyton trees discovered in Somerset, England, represents the earliest-known forest.

== Discovery == The genus was established in 1926 from specimens collected by R. Kräusel & H. Weyland, in Hardberg and Kirberg, Rhineland, Germany, who identified the type species Calamophyton primaevum. A second species, C. renieri, was described by Suzanne Leclercq in Belgium in 1940; a third, C. bicephalum, also found in Belgium, by Leclercq and H. Andrews in 1960; and a fourth, C. forbesii, in the Mapleton Sandstone, Maine, United States, by James M. Schopf in 1964. It has since been suggested that C. primaevum and C. bicephalum are conspecific. All specimens date to the Middle Devonian, some .