Photographs by Meghan Radtke Three compression leaf fossils are pictured here from the Paleocene of Sentinel Butte Formation near Almont, North Dakota. Laminar shape is elliptic and symmetrical. The base is concavo-convex and apices are not preserved. Margins are entire.
Primary venation is suprabasal.
Secondaries are craspedodromous with tertiaries formed at right angles to the secondaries. In general, tertiaries are slightly curved and opposite percurrent. Tertiaries present along the basal pair of secondaries are very strong and almost resemble agrophic veins. Opposite percurrent quaternaries are the highest level of venation visible.