Synonym: Lycophyceae [replaced name]
Parent taxon: Pteridophyta according to D.J. Mabberley 2000
See also Hickey 1977, Kenrick and Crane 1997, Lapasha and Miller 1985 and McIver and Basinger 1993
Sister taxa: Acrostichides, Acrostichophyllum, Actinopteris, Actinostelopteris, Agasopteris, Alcicornopteris, Anastomopteris, Aneimidium, Anotopteris, Aphlebiocarpus, Apiculatisporis, Archaeoxylon, Arcyopteris, Aspideae, Aspidioides, Asplenioides, Aspleniopteris, Asterochlaena, Asterochlaenopsis, Aulacopteris, Auritulinasporites, Bachasupteris, Balantites, Bambakia, Baqueroites, Beinertia, Bellopteris, Benizia, Bernoullia, Biarmella, Bockschia, Bonaventurea, Boweria, Brittsia, Cardioangulina, Cardiopteridium, Carolopteris, Catenopteris, Cephalotheca, Chansitheca, Cheiloleptites, Chorionopteris, Chrysodiopteris, Cibotiumspora, Cingulatipollenites, Clavatasporites, Coenopteridales, Comia, Comipteridium, Concavisporites, Converrucosisporites, Crenaticaulis, Cynepteris, Dactylopteris, Dactylotheca, Danaeides, Deccanites, Delgadoa, Desmophlebis, Dicksoniopteris, Dicropteris, Dictyocallipteridium, Didymosorus, Diplasiophyllum, Diplazites, Diplodendron, Diplophacelus, Discopteris, Distichopteris, Doleropteris, Duplexisporites, Dvinopteridium, Dzergalanella, Eboracia, Emplectopteridium, Eodelopterum, Eodelopterum priscum, Eorhachis, Eskdalia, Filices, Filiciphyllum, Filicites, Filicorachionites, Flicheia, Floropteris, Foliopteris, Forbesia, Fortisia, Fortopteris, Foveogleicheniidites, Gellera, Glenopteris, Glockeria, Glossochlamys, Goeppertella, Goeppertia, Grandeurya, Guptiorachis, Gutbieria, Gymnocaulus, Gyropteris, Halopteris, Hawlea, Hemionitites, Heterofilicites, Hymenophyllea, Impardecispora, Iniopteris, Isiolopteris, Jarenga, Johnstonia, Kandyria, Kankakeea, Karinopteris, Katadromopteris, Katasiopteris, Ketovia, Kidstonia, Knorripteris, Konnoa, Leckenbya, Lescuropteris, Listrophyllum, Lobifolia, Lomatopteris, Lonchopteris, Lopinopteris, Loxopteris, Lygodites, Marattites, Marcouia, Margaritopteris, Marzaria, Medullosites, Megalopteris, Menopteris, Merianopteris, Mesodescolea, Microdictyon, Microfoveolatosporis, Microreticulatisporites, Mixoneura, Monheimia, Monolete, Mundapteris, Muricingulisporis, Murospora, Myriotheca, Naktongia, Neriopteris, Noeggerathia, Noeopteris, Onocleites, Ophioglossites, Osmundia, Osmundophyllum, Otidophyton, Pachyphyllum, Palaeopteris, Parazola, Parkeriaceae, Parkerioidea, Peremopteris, Permopteridium, Peruviophyllum, Phialopteris, Pilosisporites, Plumatopteris, Poacordaites, Polycingulatisporites, Polypodiopsida, Polypodites, Polytheca, Protoblechnum, Psalixochlaena, Pseudadiantites, Pseudocordaites, Pseudodanaeopsis, Pseudorhacopteris, Psilatriletes, Psilotopsida, Pteridites, Pteridoleimma, Pteridopsida, Pteridorachis, Pteridotheca, Pteropsida, Renaultia, Reussia, Rhabdoxylon, Rhachiopteris, Rhacophytales, Rhacopteris, Rhizodendron, Rhizomites, Rhizomites, Rubinella, Ruflorinia, Saadisporites, Saccopteris, Sachalinia, Sacheria, Scapanophyllum, Schizaeites, Schizodendron, Sciadipteris, Sclerophyllina, Scleropteridium, Scleropteris, Scolopendrites, Scortea, Selenochlaena, Shirakia, Silesiopteris, Sitzia, Sitzopteris, Sorocladus, Sphegopteris, Sphenopteridium, Sphyropteris, Stachypteris, Staphylopteris, Steffensia, Stewartiopteris, Stipitopteris, Straelenipteris, Strephopteris, Supaia, Surangea, Sylvia, Sylvopteris, Synia, Taenitites, Tedelea, Teilhardia, Tetraptilon, Tetratmema, Thecopteris, Tietea, Trilobosporites, Trimatopteris, Triplanosporites, Tuberositriletes, Tubicaulidaceae, Tungussopteris, Tuzhykoviella, Ungeria, Uralia, Uralopteris, Vargolopteris, Velosporites, Wingatea, Zalesskyella, Zonopteris, Hydropterangium
Subtaxa: Archaeosigillaria Austrostrobus Chaloneria Clwydia Ficoidites Foveotriletes Gymnostrobus Kraeuselisporites Lepidodendropsis Lepidosigillaria Lilingostrobus Lycospora Planisporites Protolycopodites Reticulisporites Styxisporites Uvaesporites Wuxia Yuguangia Zebrasporites