? Polyplumaria antarctica — Jäderholm, 1926: 6.
Remarks. Jäderholm (1926) provided neither description nor figures of the material studied and, therefore, without its re-examination, it is not possible to determine if it belongs to this species. Peña Cantero & Vervoort (1995) already indicated that the material assigned to this species by Jäderholm (1926) probably belong to another species.