Brachiopod assemblages in the Devonian Kowala Formation of the Holy Cross Mountains

Givetian an d Frasnian calcareous microbiotas of the Holy Cross Mountains

Ernst Julius Öpik, an undervalued Estonian precursor of the Alvarez impact catastrophism

The Alvarez impact theory of mass extinction; limits to its applicability and the "great expectations syndrome"

Increasing international impact of Polish Polar Research

The weathering−modified iridium record of a new Cretaceous–Palaeogene site at Lechówka near Chełm, SE Poland, and its palaeobiologic implications

"Late Permian" vertebrate tracks from the Tumlin Sandstone of Poland - a commentary on some major implications

Very large stromatoporoid indicating Early Frasnian reef core (Holy Cross Mts., Poland)