Dicksonia is a genus of tree ferns in the order Cyatheales. It is regarded as related to "Cyathea", but is considered more primitive, dating back at least to the Jurassic and Cretaceous periods. The fossil record includes stems, pinnules, and spores.
Dicksonia is a higher order of Cyatheales
Dicksonia is only stated to be in the order Cyatheales. It is not certain if it is a higher order (or that even exists). The model probably got it wrong because it assumes that is completely wrong as it was already stated to be in the order