Psilophytales

plural noun
Psi·​lo·​phy·​ta·​les | \ -ā(ˌ)lēz\

Definition of Psilophytales

: an order of Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known land plants with vascular structure

History and Etymology for Psilophytales

New Latin, from Psilophyton + -ales

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