Bomfleur et al. (2017): The fossil Osmundales (Royal Ferns)—a phylogenetic network analysis, revised taxonomy, and evolutionary classification of anatomically preserved trunks and rhizomes. this study l) a rm fo n /i s ) u e ly n b i e s ri ) m y g u t e fa il b n b ib b u e u r u am (S G (S (T S F Wang et al. (2014)* Osmunda s) s) u l) l) u n a a n e s m y m s e g u r il r u g b n fo fo n b u e n am n e u (S G (i F (i G (S Tidwell & Ash (1994) s) s) Plenasium Plenasium u ly y u n i il n e s m y m s e g a l a g a Claytosmunda b u f i f u b a b b n d u n m e u d S e u a u S n ( G S F S G ( n u u m m s s O O nae p p Osmunda u u Osmunda o o ndi r r g g n n Osmunda Osmunda smu w w O o o r r c c a a Osmundastrum ndeae d d Osmundastrum Osmundastrum n n u u O. (Claytosmunda) O. (Claytosmunda) smu O m m s Osmundastrum s Osmundastrum O O Todea Todea Plenasium ) m l Leptopteris Leptopteris u a Plenasium Plenasium i s Miller (1971) rm a fo n e in l s/ P y u il n y m s e Todea Todea il fa u g b n b m u e u Fa S (S Millerocaulis Millerocaulis Aurealcaulis G Leptopteris Leptopteris Osmunda Millerocaulis Millerocaulis e e Todea a a e e c c nae a a a d d d n n n odei u T u u Leptopteris m m m s Osmundastrum s s O O O Plenasium Osmundoideae Millerocaulis group e a e d i o p p d e e Todea u u n e e a a o o u a a r r Ashicaulis e e Ashicaulis e e e Ashicaulis g g Ashicaulis m c c a d d s i i a a e m m O o o Leptopteris e e d d c d d t t n n n n a s s u u u u d m m n m m s s u s s O O m O O s O s s i i l herbstii group l u u a a c c a o r d e l n l Ashicaulis group i u M m s braziliensis group O Palaeosmunda Palaeosmunda skidegatensis group Aurealcaulis Aurealcaulis Palaeosmunda Palaeosmunda e Anomorrhoea a Bathypteris e c Chasmatopteris a e d a e Iegosigopteris n d i Aurealcaulis Aurealcaulis u o r Petcheropteris e t m p s o kolbei group n Thamnopteris O m a Itopsidema Itopsidema h T Osmundacaulis Osmundacaulis Shuichengella Shuichengella Palaeosmunda Zalesskya Donwelliacaulis Donwelliacaulis Lunea Lunea ? Itopsidema Guairea Guairea Zhongmingella Zhongmingella Thamnopteris Thamnopteroideae Anomorrhoea Anomorrhoea e e Bathypteris Bathypteris a a e e Chasmatopteris Chasmatopteris c c e e a a a a e e Iegosigopteris e e Iegosigopteris r r d d i i i i o o a a Petcheropteris r r Petcheropteris Chasmatopteris e e u u t t p p G G o o Thamnopteris n n Thamnopteris Osmundacaulis Osmundacaulis m m a a h h T T Zalesskya Zalesskya Itopsidema e e Itopsidema a a Donwelliacaulis e e Donwelliacaulis c c Shuichengella a a Shuichengella e e Bathypteris Bathypteris Osmundacaulis r r i i ? Guairea a a Guairea Grammatopteris Grammatopteris u u e e a a ‘ ‘ G G Chasmatopteris Chasmatopteris e e e e Lunea Lunea d d i i a a o o Iegosigopteris r r Iegosigopteris e e e e t t d d i i p p o o o o t t r r a a e e t t Thamnopteris m m Thamnopteris s s p p a a o o h h C C n ?? n m m a a h h Zalesskya T T Zalesskya ‚ ‚ Shuichengella Relative species richness: scale bar = 1 species Guairea e a Guaireoideae e Zhongmingella c Nomenclatural novelty compared to previous classification a Lunea e r Itopsidema i a Donwelliacaulis Itopsidemoideae u Tiania G outgroup Bathypteris ? Figure S1. Nomenclatural and taxonomic history and taxic diversity of extinct and extant Osmundales, based on selected comprehensive reviews since the 1970s. *This analysis is based partly on „genus-level composites“ as operational units whose coding was derived either directly from one particular, presumably representative species or via composite coding of information from a varying range of selected species. We inferred the number of species within each of these composites (indicated here by the height of the relevant box) by summarizing the number of valid species known at the time of publication for the particular composite as circumscribed by the authors..