noun
Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
• Syn: ↑Psilophytales
• Hypernyms: ↑plant order
• Member Holonyms: ↑Pteridophyta, ↑division Pteridophyta
• Member Meronyms: ↑psilophyte, ↑Psilophytaceae, ↑family Psilophytaceae, ↑Rhyniaceae, ↑family Rhyniaceae
Useful english dictionary. 2012.