We discovered two new species of Sigillariostrobus cones belonging to the extinct arborescent lycophytes (club mosses). These cones usually fall apart, so finding new intact cones is rare and very important for understanding the diversity of Carboniferous lycophytes. The two species are the first from Britain, although the other cones are known from Europe. One of the cone species has Laevigatisporites glabratus-type spores inside; the other has Tuberculatisporites brevispiculus-type spores.

In my paper I describe the fossil material from Lower Triassic Czatkowice 1 locality in southern Poland. The material was included to dipnoan genus Gnathorhiza in 2003, and in the present paper I provide its specific assignment. Based on comparison with other Gnathorhiza species the Polish material belongs to Gnathorhiza otschevi, which is known from the European part of Russia. I have also summarized relationships, the stratigraphic and palaeogeographic distribution of Gnathorhiza.

Complete morphological descriptions of exceptionally beautifully preserved Late Jurassic fishes from Bavaria (e.g., Ettling and Eichsttät), southern Germany, are provided for a new genus and species, which is endemic of Ettling and for a new family, Ascalaboidae. The new family is only known from marine Upper Jurassic localities of Europe and is interpreted as an extinct and primitive group of Teleostei, which is considered the largest group within osteichthyans (bony fishes).

This work is based on scales of a new group of Cretaceous South American fishes. Detail studies about scales are very useful, considering that many fossil fishes are known because of their squamation. Comparisons with other Mesozoic fishes were made. Among main conclusions are that these fishes present lepisosteoid-type scales (with enamel but without dentine) and in particular paired dorsal scales in the position where other fishes commonly have median dorsal ridge scales.