Solaranthus S.Zheng & X.Wang, 2010 genus synonym

Baisianthus V.A.Krassilov & E.V.Bugdaeva, 2000 genus doubtful

Quadrispermum E.M.Friis, K.R.Pedersen & P.R.Crane, 2013 genus doubtful

Tomcatia E.M.Friis, K.R.Pedersen & P.R.Crane, 2013 genus doubtful

Acanthocatia E.M.Friis, K.R.Pedersen & P.R.Crane, 2013 genus doubtful

Vitimantha V.A.Krassilov & E.V.Bugdaeva, 2000 genus doubtful

Loricanthus V.A.Krassilov & E.V.Bugdaeva, 1999 genus synonym

Nataligmataceae family synonym

Bassitheca S.R.Manchester, X.Zhang, C.L.Hotton, S.L.Wing & P.R.Crane, 2022 genus doubtful

Dayvaultia S.R.Manchester, X.Zhang, C.L.Hotton, S.L.Wing & P.R.Crane, 2021 genus doubtful

Protoephedraceae family accepted

Qataniaria V.Krassilov, 2011 genus doubtful

Alaticolpites M.S.P.Regali, N.Uesugui & A.S.Santos, 1975 genus accepted

Gnetaceae family accepted

Aegianthus V.A.Krassilov, 1988 genus doubtful

Elaterosporites S.Jardiné, 1967 genus accepted

Elaterocolpites S.Jardiné & L.Magloire, 1965 genus accepted

Cratonia C.Rydin, B.Mohr & E.M.Friis, 2003 genus doubtful

Steevesipollenites L.E.Stover, 1964 genus accepted

Equisetosporites L.H.Daugherty, 1941 genus accepted

Baisia V.A.Krassilov, 1982 genus doubtful

Eoantha V.A.Krassilov, 1986 genus doubtful

Thoaceae family synonym

Cattomia E.M.Friis, K.R.Pedersen & P.R.Crane, 2013 genus doubtful

Praeherba V.A.Krassilov & E.V.Bugdaeva, 2000 genus doubtful