ToL Scientific Contributors for Polypodiopsida

• Maarten Christenhusz The Natural History Museum, London, United Kingdom (Equisetum, Marattiales, Osmundaceae)
• Amanda Grusz Duke University, Durham, North Carolina, USA (Pteridaceae)
• Fay-Wei Li Duke University, Durham, North Carolina, USA (Polypodiales)
• Jordan Metzgar Duke University (Polypodiopsida)
• Kathleen M. Pryer Duke University, Durham, North Carolina, USA (Polypodiopsida)
• Carl Rothfels Duke University, Durham, North Carolina, USA (Lycopodiopsida, Polypodiopsida, Pteridaceae)
• Harald Schneider Natural History Museum London, UK (Polypodiopsida)
• Eric Schuettpelz Duke University, Durham, North Carolina, USA (Polypodiopsida)
• Erin Sigel Duke University, Durham, North Carolina, USA (Polypodiales)
• Alan R. Smith University of California, Berkeley, California, USA (Polypodiopsida)
• Michael Windham Utah Museum of Natural History, Salt Lake City, Utah, USA (Polypodiopsida)

ToL Media Contributors for Polypodiopsida

• Maarten Christenhusz The Natural History Museum, London, United Kingdom
• John Giezentanner
• Brian S. Leander The University of British Columbia, Vancouver, British Columbia, Canada
• Stefan Luketa University of Novi Sad, Serbia
• David R. Maddison Oregon State University
• Jordan Metzgar Duke University
• Kathleen M. Pryer Duke University, Durham, North Carolina, USA
• Carl Rothfels Duke University, Durham, North Carolina, USA
• Katja Schulz Smithsonian Institution, National Museum of Natural History, Washington, DC, USA

Other Polypodiopsida biologists and enthusiasts

• SURINDER PAL KHULLAR PANJAB UNIVERSITY , CHANDIGARH INDIA (Polypodiopsida)
• Jon Moore Florida Atlantic University (Acantheae, Acanthopterygii, Acanthus Clade, Acari, African Ruellia, Agaricales, Agaricomycotina, Aleocharinae, Aliatypus, Anacardiaceae, Andalucia, Ankylosauria, Arcellinida, Architeuthis, Archon bostanchii, Archonias brassolis, Argonauta, Asellariales, Aspidogastrea, Asteroidea, Atlanta brunnea, Aulacidae, Berryteuthis magister nipponensis, Bolitaena pygmaea, Bolitoglossinae, Calisto, Callichthyidae, Cardiapoda, Cardiapoda richardi, Carinaria, Carinaria challengeri, Carinaria cithara, Carinaria cristata, Carinaria galea, Carinaria japonica, Carinaria lamarcki, Carinariidae, Caryophyllales, Cassieae sensu lato (pro parte), Chaetothyriales, Chiroptera, Chlorarachniophytes, Cicindis horni, Ciconiidae, Classicula, Clusiidae, Core Eudicots, Crenarchaeota, Cryptalyra, Cryptomycocolax, Cryptoteuthis brevibracchiata, Cystobasidiomycetes, Dacrymycetales, Delitschiaceae, Dimargaritales, Diptera, Discoteuthis sp. A, Diversisporales, Echinodermata, Echinophthiriidae, Entomophthorales , Eunica, Euphasmida, Euruellia clade, Fabaceae, Firoloida demarestia, Florideophyceae, Fuscocimex caecus, Gerrardina, Gesneriaceae, Glomerales, Gregarina, Gruiformes, Harpellales, Hemidactylium scutatum, Heteroteuthis dispar, Heteroteuthis sp. A, Hydracarina, Hydrophiloidea, Hymenochaetoid clade, Hyperotreti, Hysteriaceae, IRLC (Inverted Repeat-lacking clade), Ichthyostega, Icteridae, Iridoteuthis iris, Iridoteuthis sp. A, Isanopus, Justicieae, Kickxellales, Leiopelma, Leishmania, Lepidogalaxias salamandroides, Leptosomus discolor, Libythea cinyras, Libytheinae, Lophiiformes, Magnapinna atlantica, Marattiaceae, Mastigoteuthis, Mastigoteuthis type beta, Melanoclusia bivibrissa, Melanosporales, Microbotryomycetes, Microsporidia, Mixia osmundae, Mochokidae, Monoblepharidales , Morpho, Mortierellales, Mucorales, Mygalomorphae, Mysmenidae, Neocallimastigales, Neornithes, Notholaena aureolina clade, Notonykia nesisi, Nymphalini, Odonata, Ommastrephidae, Ommastrephinae, Opisthoteuthis, Opisthoteuthis borealis, Osteoglossomorpha, Osteostraci, Oxygyrus keraudreni, Palaeognathae, Paraglomus, Parnassiinae, Passeriformes, Pelecaniformes, Percomorpha, Pipunculidae, Plasmodium, Polypodiales, Prodoxidae, Prokinetoplastina, Psocidae, Psocomorpha, Pteridaceae, Pterosoma planum, Pterotrachea, Pterotrachea coronata, Pterotracheoidea, Ptiliidae, Ptycta, Ptycta johnsoni, Pucciniomycetes, Rhinophrynus dorsalis, Rhizophydiales, Rhodomelaceae, Ruellia harveyana clade, Ruellia humilis clade, Ruellia inflata clade, Ruellia inundata clade, Ruellia jaliscana clade, Ruellia s. l., Salticidae, Samydaceae, Scyphostegia borneensis, Seymouriamorpha, Somasteroidea, Sordariomycetes, Speculum speculum, Spelerpinae, Spermophilopsis, Sporormiaceae, Stephanidae, Stephanopogon, Stephanopogon apogon, Stephanopogon minuta, Stoloteuthis leucoptera, Stratiomyidae, Synaphridae, Tetragnathidae, Tetraodontiformes, Theridiidae, Thunbergioideae, Tremellomycetes, Troctomorpha, Trogiomorpha, Trogonidae, Trypanosoma, Trypanosomatina, Verrucariaceae, Western Palearctic water frogs, Xerini, Zoopagales, Zygomycota, cheilanthoids, core Caryophyllales, core Notholaena, old Hyperoartia, supergenus Batrachoseps)
• Radoslaw Walkowiak International Equisetological Association (Equisetum)
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