was named by Goubet et al. (2000)
[In 1979, Gillespie and Pfefferkorn described and figured specimens of this form under the name of Neuropteris pocahontas var. inaequalis, but there are strong differences in the two genera.
The species was named in honor of the three paleobotanists, Sergio Archangelsky, Sergius H. Mamay, and Sergi V. Meyen, known as the "three Sergeis," who met in 1979 at the International Carboniferous Congress in Illinois, where preliminary papers on the "proposed Pennsylvanian System stratotype" were presented.].