Coenopteridales

plural noun

Coe·​nop·​ter·​i·​da·​les

ˌsē(ˌ)näpˌterəˈdā(ˌ)lēz,

ˌse-

: an order of extinct Devonian and Carboniferous ferns that is usually considered as part of or coextensive with the subclass Primofilices and that has both simple and pinnate leaves with the latter having pinnae at an angle to the plane of the leaf blade

Word History

Etymology

New Latin, from coen- + Greek pterid-, pteris fern + New Latin -ales

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