The as-yet-undescribed Upper Pease River flora is quite limited in composition, with cordaitean material most conspicuous and minor representatives of calamites, gigantopterids, and pteridophylls.
The latter group comprises the archaeocalamites, calamites, and horsetails.
The wonderful silicified Permian ferns from Brazil, such as psaronias, tieteas, and calamites, are also described.
Coal forests of giant lycopods, calamites, pteridophytes and ferns cover the tropical landmasses.
Like the lycopod trees, these woody calamites scarcely survived the ‘Age of Coal’, and by the mid-Permian they were extinct.
