†Hamatophyton †Bowmanites †Cheirostrobus †Columnisporites †Gondwanophyton †Lilpopia †Peltastrobus †Rinistachya †Rotafolia †Sentistrobus †Sphenophyllostachys †Sphenophyllum †Xihuphyllum Sphenophyllales is an extinct order of articulate land plants and a sister group to the present-day Equisetales (horsetails).

They were common during the Late Pennsylvanian to Early Permian, with most of the fossils coming from the Carboniferous period.

[1][2] Sphenophyllales are small, slender branching plants, usually growing to a height of less than 1 m (3.3 ft) tall.

The stems are jointed and ribbed with weak habits, making it probable that these plants were vine or shrub-like when alive, and formed a portion of the understory in Carboniferous forests.

The leaves, which can be several centimeters long, are borne on each node in whorls (called verticels) and are wedge-shaped, fan-shaped, linear, or forked.