''Sphenophyllum'' is a genus in the order
Sphenophyllales
Sphenophyllales is an extinct order of articulate land plants and a sister group to the present-day Equisetales (horsetails). They are fossils dating from the Devonian to the Triassic. They were common during the Late Pennsylvanian to Early P ...
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References
{{Taxonbar, from=Q2295931
Horsetails
Fossils of Georgia (U.S. state)
Paleozoic life of New Brunswick
Paleozoic life of Nova Scotia
Paleozoic life of Prince Edward Island