The triradiate mark is simple and confined to the thin part of the proximal membrane. The exine is externally smooth but strongly inframurinate. In the Nevada study area the species is found throughout the Sevy Formation and parts of the Laketown Formation. It is most common in the Upper Silurian Ludlow, rather rare in the Wenlock, and rare in the Llandovery. It differs from Archaeozonotriletes chulus var.
Spores belong to the plant kingdom.
Most palynologists agree that these forms represent ancient fruiting body elements of plants long extinct. This species of spore pictured was first discovered by Fritz Cramer in 1966.