Commons Attribution-Share Alike 4.0 truetrue English Superficialview of a ''Rhynia'' stemwithscale bar added URL: https://commons.wikimedia.org/wiki/user:Peter_coxhead
Creative Commons Attribution-Share Alike 4.0 truetrue English Superficialview of a ''Rhynia'' stem object has role: photographer author name string: Peter
With thanks to H.-J. Weiss who gave me the sample of Rhynie chert. I, the copyright holder of this work, hereby publish it under the following licenses: