Progymnosperm

Archaeopteris tree from the Devonian period, on

An Archaeopteris plant from the Paleozoic Era

A collection of plants, trees and ferns that lived

Archaeopteris prehistoric tree from the Late Devonian Period

Archaeopteris tree isolated on white background

Archaeopteris hibernica

Archaeopteris hibernica, fossilised tree

Archaeopteris hibernica, fossil plant