|
Eggert, D.A., 1961.
The Ontogeny of Carboniferous Arborescent Lycopsida. Palaeontographica (Abt. B) 108 (3-6), May 1961: 43-92. ≡ |
|
The Pteridophyte Phylogeny Group, 2016.
A community-derived classification for extant lycophytes and ferns. J. Syst. Evol. 54 (6), Nov 2016: 563-603. ≡ |