Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants

Publication Type:Journal Article
Year of Publication:2001
Authors:K. M. Pryer, Schneider, H., Smith, A. R., Cranfill, R., Wolf, P. G., Hunt, J. S., Sipes, S. D.
Journal:Nature
Volume:409
Issue:6820
Start Page:618
DOI:10.1038/35054555
Taxonomic name: 
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith