Parent taxon: Gymnospermophyta according to G. J. Retallack 1981
See also Lapasha and Miller 1985
Sister taxa: Accintisporites, Alisporites, Allicospermum, Amdrupia, Antarcticoxylon, Ashmoripollis, Cedripites, Cerebropollenites, Cycadinoxylon, Darneya, Decussosporites, Dinophyton, Eddya, Embergerixylon, Enzonalasporites, Exesipollenites, Falcisporites, Galeacornea, Gnetaceaepollenites, Indusiisporites, Ktalenia, Lagenospermopsida, Lasiostrobus, Lobatoxylon, Majsassia, Menaispermae, Minutosaccus, Paradoxoxylon, Parataxopitys, Parcisporites, Perinopollenites, Pilasporites, Protocircoporoxylon, Protopitys, Protopolyporoxylon, Prototaxodioxylon, Pteridospermaexylon, Reticulopitys, Rugubivesiculites, Scotoxylon, Shanbeipollenites, Sofrepites, Solenopitys, Solenoxylon, Squamae, Striomonosaccites, Svalbardoxylon, Taeniopitys, Taxacites, Tordoxylon, Trisocladus, Tungussocarpus, Yezonia, Yorkoxylon, Zonallapollenites
Subtaxa: none
Distribution: