In 1996, a living species, Sikhotealinia zhiltzovae  was discovered in the Sikhote-Alin mountains in southeastern Siberia, and assigned to this family. Their placement is uncertain, but are usually considered archostematans.
In 1996, a living species, Sikhotealinia zhiltzovae, was discovered in the Sikhote-Alin mountains of eastern Siberia and was placed within this family. Its status as an archostematan is still debated, but it is commonly regarded as such.