Historical drawings of representatives of the trace fossil genera "Cruziana" and "Rusophycus" (modified from original plates), then regarded as plant fossils and all referred to "Rusophycus". A + B = “"Rusophycus clavatus"” (rather referrable to "Cruziana"), C + D = “"Rusophycus subangulatus"” (clearly referrable to "Cruziana"), E + F = "Rusophycus bilobatus", G + H = "Rusophycus pudicus", J = "Rusophycus bilobatus".