Gametophytes have also been recognized in compression preservation. Baragwanathia and Cooksonia Baragwanathia is a putatitive early lcopod from the Silurian of southern Australia. The age of these fossils was long controversial, but now it is agreed that they are Silurian. Cooksonia Virtual Paleobotany Laboratory Cooksonia pertonii Hans Steur's Paleobotany Pages Cooksonia pertonii Hans Steur's Paleobotany Pages One of the most famous Early Devonian land plant localities is Rhynie in Aberdeenshire, Scotland. The Rhynie Chert is one of the most important fossil plant occurrences because it represents the oldest and most completely preserved terrestrial ecosystem.
Plants remains show excellent cellular preservation.
Although plants are preserved in great detail natural affinities of the taxa are not always clear. 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.