The Rhyniophytes are a group of early land plants originally described from the Rhynie Chert. They have naked, dichotomously branching axes with terminally positioned sporangia. Some authors classify these taxa in separate groups. Several Zosterphylls have naked axes, others have small spine-like enations. Very typical are H-shaped branching patterns and coiled axis apices.
Most forms are known as compressions, however also anatomically preserved material is known.
The Trimerophytes are a group Early and Middle Devonian plants with either dichotomously branching axes, or with a monopodial main axes. The Trimerophytes were certainly the most robust plants occurring during the Early Devonian. The last check of the list of links was done on 25 October 1999. Ratings are of course subjective but should be helpful for finding the fastest way to good pictures on the web. Own pictures are of course not rated.