This paper describes lycophytes from calciferous siltstones cropping out locally in an area of fluvial deposits along the right margin of the Iguaçu River, about 4 km east of Fluviópolis, State of Paraná, Brazil. These sediments may belong to the Terezina or, perhaps, Serra Alta Formations of the Passa Dois Group, Paraná Basin. Glossopteris spp. are the most abundant elements, and Paracalamites and Gingko-like leaves also occur. Lycophytes are very rare, but their occurrenceis considerably important for two reasons: 1) their phytostratigraphic and evolutionary signiflcance at this levei (Upper Permian), plus their geographic situation, and 2) their unusual mode of preservation. The fossils described here exhibit impressions of cortical features on fine clastic sediments and submillimetric films of carbonized cortical tissues. Some features observed on decorticated surfaces are comparable to those of Cyclodendron, but others are similar to those usually described in Lycopodiopsis derbyi, common in other localities at about the same stratigraphic levei. Considering the present state of knowledge of the latter, the fóssil here described is designaied ?Lycopodiopsis sp, This study shows that a comprehensive revision of the great number of specimens referred to L. derbyi is urgently needed
