| Tetraxylopteris, Archaeopteris, Archaeopteridales, Trimerophytopsida, Calamophyton|Aneurophyton Wikipedia
Aneurophyton is a genus of extinct vascular plants that belong to the Aneurophytales, a class of progymnosperms. The genus is primarily known from records of two well-known species found in mostly Middle Devonian and Upper Devonian (late Eifelian to Famennian) outcrops in Belgium, China (West Junggar), Germany, and the United States (New York). Some uncertain species within the genus are also recorded from Middle Devonian outcrops in Kazakhstan, Russia (Timan and Siberia), and the Ukraine. While a number of species have been described in the paleobotanical literature, the genus likely only contains two well-circumscribed species, A. germanicum and A. doui, and possibly a third species, A. olnense, from Fammenian outcrops in Belgium. If the ages of the Early Devonian (Emsian) records of A. germanicum reported from Siberia are confirmed, these would constitute the oldest records of this genus.